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US Patent: 679,031
Power Press
Patentees:
George A. Ohl, Sr. - Newark, Essex County, NJ
George A. Ohl, Jr. - Newark, Essex County, NJ
Frederick W. Theberath - Newark, Essex County, NJ
August A. Berghof - Newark, Essex County, NJ

USPTO Classifications:
74/355, 74/586, 74/829

Tool Categories:
metalworking machines : punch presses

Assignees:
George A. Ohl & Co. - Newark, Essex County, NJ

Manufacturer:
George A. Ohl & Co. - Newark, Essex County, NJ

Witnesses:
Frederick C. Fraentzel
John S. La Bar
George T. Richards

Patent Dates:
Applied: Mar. 05, 1901
Granted: Jul. 23, 1901

Patent Pictures: [ 1 | 2 ]
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"Vintage Machinery" entry for George A. Ohl & Co.
Description:
Abstract:

This invention has reference generally to improvements in that class of power-presses which are employed for the purpose of bending metal or for the purpose of corrugating, crimping, or squeezing together sheet metal or for the working of other materials.

The present invention, therefore, has for its principal object to provide a power-press of a novel design which is especially adapted for bending metal, embodying in the construction of the machine features which will admit of a very wide range of work to be performed on the machine, the press being especially constructed for the purposes of making metal cornices.

A further object of this invention is to provide a large and powerful press which shall be very simple in its construction and operation, the operating mechanism thereof being controlled by a foot-treadle and link-motion working a friction clutch for rotating the main or pinion shaft of the machine and having a brake upon the pinion-shaft which effectually places the slide or hammer of the press under perfect control of the operator at all times, whereby the slide or hammer can be stopped at any part of its stroke.

A further object of this invention is to provide an improved and quick adjustment of the slide or hammer by means of a frog-motion, which is actuated from a hand-lever and a pulley arranged upon the shaft or spindle bearing the frog-motion, whereby two or more pitmen and eccentrics, which produce a reciprocatory motion of the slide or hammer, can be simultaneously adjusted and the movable parts of the machine still maintained in their perfect alignment.

Claims:

1. In a power-press, the combination, with the main driving-shaft, the slide or hammer supporting shaft, and the slide or hammer, of a pair of eccentrics on said slide or hammer supporting shaft, a means of pivotal connection on said slide or hammer, consisting, of curved recessed parts 81 in the upper edge of the hammer, and perforated lugs 83 adjacent to the said perforated parts 81, provided with pins 82, and a pitman between each eccentric and said means of pivotal connection, provided with right and left screw-threads, a knuckle on the lower screw portion of each pitman, each knuckle being pivotally secured on a pin 82 and having a curved part snugly fitted into the curved recessed parts 81 between said lugs 83, and means for causing the rotation of said pitmen for adjustment of the slide or hammer, substantially as and for the purposes set forth.

2. In a power-press, the combination, with the main driving-shaft, the slide or hammer supporting shaft, and the slide or hammer, of eccentrics on said slide or hammer sup porting shaft, a means of pivotal connection on said slide or hammer, a pitman between each eccentric and said means of pivotal connection, provided with right and left screw-threads, and means for causing the rotation of said pitmen for adjustment of the slide or hammer, comprising, a bevel-gear fixed on each pitman, a spider-frame provided with hearings on the hub of each bevel-gear, a shaft 113 rotatably arranged in said bearings, bevel-pinions at the ends of said shaft in mesh with said bevel-gears, a toothed wheel on said shaft, and a frog-motion adapted to be brought in engagement with said toothed wheel for producing the reverse rotations of said shaft and the said pitmen, substantially as and for the purposes set forth.

3. In a power-press, the combination, with the main driving-shaft, the slide or hammer supporting shaft, and the slide or hammer, of eccentrics on said slide or hammer supporting shaft, a means of pivotal connection on said slide or hammer, a pitman between each eccentric and said means of pivotal connection, provided with right and left screw-threads, means for causing the rotation of said pitmen for adjustment of the slide or hammer, comprising, a bevel-gear fixed on each pitman, a spider-frame provided with bearings on the hub of each. bevel-gear, a shaft 113 rotatably arranged in said bearings, bevel-pinions at the ends of said shaft in mesh with said bevel-gears, a toothed wheel on said shaft, a shaft 99 also rotatably arranged in bearings of said spider-frames, a frog-motion on said shaft 99, means for operating said motion for its engagement with the toothed Wheel on said shaft 113, to produce the reverse rotations of said shaft 113 and of said pitmen, and means for operating said shaft 99, substantially as and for the purposes set forth.

4. In a power-press, the combination, with the main driving-shaft, the slide or hammer supporting shaft, and the slide or hammer, of eccentrics on said slide or hammer supporting shaft, a means of pivotal connection on said slide or hammer, a pitman between each eccentric and said means of pivotal connection, provided with right and left screw-threads, means for causing the rotation of said pitmen for adjustment of the slide or hammer, comprising a bevel-gear fixed on each pitman, a spider-frame provided with hearings on the hub of each bevel-gear, a shaft 113 rotatably arranged in said bearings, bevel-pinions at the ends of said shaft in mesh with said bevel-gears, a toothed wheel on said shaft, a shaft 99 also rotatably arranged in bearings of said spider-frames, a frog-motion on said shaft 99, means for operating said motion for its engagement with the toothed wheel on said shaft 113, to produce the reverse rotations of said shaft 113 and said pitmen and means for operating said shaft 99, consisting, essentially, of a friction-clutch on the main driving-shaft, means for actuating said friction-clutch, and a driving means between said friction-clutch and the shaft 99, substantially as and for the purposes set forth.

5. In a power-press, the combination, with the main driving-shaft, the slide or hammer supporting shaft, and the slide or hammer, of eccentrics on said slide or hammer supporting shaft, a means of pivotal connection on said slide or hammer, a pitman between each eccentric and said means of pivotal connection, provided with right and left screw-threads, means for causing the rotation of said pitmen for adjustment of the slide or hammer, comprising a bevel-gear fixed on each pitman, a spider-frame provided with hearings on the hub of each bevel-gear, a shaft 113 rotatably arranged in said bearings, bevel-pinions at the ends of said shaft in mesh With said bevel-gears, a toothed wheel on said shaft, a shaft 99 also rotatably arranged in bearings on said spider-frames, a frog-motion on said shaft 99, means for operating said motion for its engagement with the toothed wheel on said shaft 113, to produce the reverse rotations of said shaft 113 and said pitmen, and means for operating said shaft 99, consisting, essentially, of a friction-clutch comprising a pulley 84 and a slide-collar 85 both on the main driving-shaft, ahandlever86, and operating-links between said lever and the slide-collar for actuating the said collar, a shaft 94, a pulley thereon, and a belt arranged over said pulleys S4 and 95, a second pulley 96 on said shaft 94, a pulley 98 on said shaft 99, and a belt passing over said pulleys 96 and-98, substantially as and for the purposes set forth.

6. In a power-press, the combination, with the slide or hammer supporting shaft and a slide or hammer, curved recessed parts 81 in the upper edge of said hammer, and perforated lugs adjacent to said parts 81, provided with pins 82, of a means of suspension between said shaft and said curved recessed parts 81 and said lugs 82 on the slide or hammer, consisting, essentially, of a pitman having right and left screw threads, and a knuckle on one of said screw-threads, said knuckle having a curved part snugly fitted in one of said curved recessed parts 81 and being secured on one of said pins 82, a bevel-gear 76 on said pitman, a bevel-pinion 114 in mesh with said gear 76, and means for causing the reverse rotations of said bevel-pinion 114, substantially as and for the purposes set forth.

7. In a power-press, the combination, with the slide or hammer supporting shaft and a slide or hammer, of a means of suspension between said shaft and said slide or hammer, consisting, essentially, of a pitman having right and left screw-threads, a bevel-gear 76 thereon, a bevel-pinion 114 in mesh with said gear 76, and means for causing the reverse rotations of said bevel-pinion 114, consisting, essentially, of a shaft 113, a gear on said shaft, and a frog-motion in mesh with said gear 115, substantially. as and for the purposes set forth.

8. In a power-press, the combination, with the slide or hammer supporting shaft and a slide or hammer, of a means of suspension between said shaft and said slide or hammer, consisting, essentially, of a pair of pitmen having right and left screw-threads, bevel-gears 76 on said pitmen, each gear having a flanged hub, a spider 101 on one hub of one gear, and a spider 102 on the hub of the other gear, means between said spiders to prevent their turning with said gears, said spiders having bearings, a shaft 113 in some of said bearings, a bevel-pinion 114 at each end of said shaft 113, a gear 115, a shaft 99 in other bearings of said spiders, a member 121 on said spider 101, provided with holes or perforations, a plate 119 on said shaft 99, means connected with said plate 119 adapted to be brought in engagement with the holes or perforations in said member 121, and gears 116, 117 and 118 on said plate 119, all arranged substantially as and for the purposes set forth.

9. In a power-press, the combination, with the main driving-shaft, the slide or hammer, and means for causing reciprocatory movements of said slide or hammer, of means for actuating said main driving-shaft, consist ing, of a friction device and its clutch, a slide-collar 42 on said shaft, and means for actuating said slide-collar, consisting, essentially, of a foot-treadle, a cross-rod 45, a link 47, a connecting-rod 48, an arm 51, and an arm 55 having a yoke-shaped end in engagement with said slide-collar, substantially as and for the purposes set forth.

10. In a power-press, the combination, with the main driving-shaft, the slide or hammer, and means for causing reciprocatory movements of said slide or hammer, of means for actuating said main driving-shaft, consisting, of a friction device and its clutch, a slide-collar 42 on said shaft, and means for actuating said slide-collar, consisting, essentially, of a foot-treadle, a cross-rod 45, a link 47, a connecting-rod 18, an arm 51, and an arm 55 having a yoke-shaped end in engagement with said slide-collar, and a friction-brake on said shaft, and means for releasing said friction-brake simultaneously with the actuation of said friction-clutch, consisting, of a member 58 of said arm 51, a brake-shoe, and a cam shaped link 63 arranged between said brake-shoe and the free end of said member 53, substantially as and for the purposes set forth.

11. In a power-press, the combination, with the side frames or housings, and a top piece 5, of hearings on said top piece, a slide or hammer supporting shaft in said bearings, and a downwardly-extending member 81 on said top piece adapted to embrace a portion of said shaft, substantially as and for the purposes set forth.

12. In a power-press, the combination, with the slide or hammer supporting shaft and the slide or hammer, of a means of suspension for the slide or hammer from said shaft, consisting, of a pair of pitmen, means for connecting said pitmen to said shaft, and means for pivot-ally connecting the lower ends of the pitmen to said slide or hammer, comprising, the pitman straps 79 having their lower curved portions fitted in correspondingly shaped recesses 81 in the upper edge of the slide or hammer, perforated lugs on said slide or hammer, and pins in said lugs upon which said straps 79 are pivotally arranged, substantially as and for the purposes set forth.

13. In a power-press, the combination, with a reciprocating slide or hammer, provided with ribs, and depressions on opposite sides of said ribs, a post on each side of said ribs, a latch pivotally arranged on each post, and means at the upper ends of said latches above the points of support of said latches, arranged to spread said upper ends and causing the lower ends to grasp the opposite sides of a die, and immovably lock said lower ends in their grasping positions on opposite sides of the die, substantially as and for the purposes set forth.

14. In a power-press, the combination, with a reciprocating slide or hammer, provided with ribs, and depressions on opposite sides of said ribs, a post on each side of said ribs, a latch pivotally arranged on each post, and means at the upper ends of said latches for causing them to grasp the opposite sides of a die, consisting, of a pin or spindle rotatively arranged in a bearing in each rib, having right and left screw-threads, and nuts on said threads pivotally connected with the upper end of each latch, substantially as and for the purposes set forth.

15. In a power-press, the combination, with a reciprocating slide or hammer, provided with ribs, and depressions on opposite sides of said ribs, a post on each side of said ribs, a latch pivotally arranged on each post, and means at the upper ends of said latches for causing them to grasp the opposite sides of a die, consisting, of a pin or spindle rotatively arranged in a bearing in each rib, having right and left screw-threads, an upwardly extending finger on each latch, provided with a bearing, a screw-pin in said bearing, and a nut 30 on each screw-pin, and a nut 29 on each screw-pin screwed upon the threaded portions of said pin or spindle, substantially as and for the purposes set forth.

16. In a power-press, the combination, with a reciprocating slide or hammer, provided with ribs, and depressions on opposite sides of said ribs, a post on each side of said ribs, a latch pivotally arranged on each post, and means at the upper ends of said latches for causing them to grasp the opposite sides of a die, consisting, of a pin or spindle rotatively arranged in a bearing in each rib, having right and left screw-threads, an upwardly extending finger on each latch, provided with a bearing, a screw-pin in said bearing, a nut 30 on said screw-pin, and a nut 29 on said screw-pin screwed upon the threaded portions of said pin or spindle, and means connected with each pin or spindle for preventing the longitudinal displacement of said pins or spindles, consisting, of slotted plates 20 fitted over grooved portions in said pins or spindles, substantially as and for the purposes set forth.

17. In a power-press, the combination, with a reciprocating slide or hammer, of a pair of oppositely-placed holding-latches arranged in depressions on opposite sides of a rib in said slide or hammer, a pin or spindle rotatively arranged in a bearing in said rib, for operating said latches, said pin having a limited movement longitudinally in said bearing, and means for limiting said movement in a longitudinal direction, substantially as and for the purposes set forth.

18. In a power-press, the combination, with a reciprocating slide or hammer, of a pair of oppositely-placed holding-latches arranged in depressions on opposite sides of a rib in said slide or hammer, a pin or spindle rotatively arranged in a bearing in said rib, for operating said latches, said pin having a limited movement longitudinally in said hearing, and means for limiting said longitudinal movement of said pin or spindle, consisting, of an annular groove in said pin or spindle, and a plate 20 secured to said rib having a slotted portion arranged in said groove and over said pin or spindle, substantially as and for the purposes set forth.

19. In a power-press, the combination, with a reciprocating slide or hammer provided with a perforated rib, of a holding-latch, a spindle rotatively arranged in the perforation in said rib for operating said latch, said pin also having a limited sliding movement longitudinally in said perforation, substantially as and for the purposes set forth.

20. In a power-press, the combination, with a reciprocating slide or hammer, of a holding-latch, a rotatively arranged pin or spindle 15 for operating said latch, said pin being arranged in a bearing in said slide or hammer, and having a limited movement longitudinally in said bearing, and means for limiting said movement in a longitudinal direction, substantially as and for the purposes set forth.

21. In a power-press, the combination, with the bed of the press, the slide or hammer, and dies, of a housing having openings therein, through which the die or the Work thereon can be removed, substantially as and for 25 the purposes set forth.

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