US Patent: 5,944X
|
Mortising
Mortising machine
|
|
Patentee:
|
|
| Abner Foster (exact or similar names) - Phillipstown, MA |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Granted: |
Apr. 28, 1830 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Jeff Joslin
|
|
Description: |
| Most of the patents prior to 1836 were lost in the December 1836 fire. Only about 2000 of the almost 10000 documents were recovered. For this patent, nothing survived. We have some second-hand information on the specification.From the July 1830 Journal of the Franklin Institute, page 18, in a listing of recent patents granted. "For an improvement in the Mode of Mortising, as in window sashes, doors, cabinet furniture, and the like; Abner Foster, Machinist, Phillipston, Worcester county, Massachusetts, April 29."The above named machine is very clearly described, and very perfect represented in the drawing; in its general structure it resembles a machine patented by Mr. John M'Clintic, Chambersburg, Pennsylvania, October 8th, 1827 (patent 4,896X). In that machine, the chisels were brought down, and raised, by means of a lever moved by hand; in the present, two treadles are employed, on operating on a chisel to the right, and the other on a chisel to the left, to finish each end of the mortise; the chisels are elevated by means of spring poles. The only parts claimed are 'the springs, and the treadles, and their application to the purposes of mortising.'"From the 1830-09-01 Journal of the Franklin Institute, page 163, letter from John McClintic, the recipient of patent 4,896X. "Sir, In examining the number of your very valuable Journal for the present month, I find that mention is made of an improvement in the mode of mortising... You very correctly state that in mine the chisels are brought down and raised by means of a lever moved by hand. In Mr. Foster's improvement it appears that the levers used are called treadles, as they are operated upon by the foot, and that the chisels are elevated by spring poles. The only parts claimed are, you say, 'the springs and the treadles, and their application to the purpose of mortising.' Upon examining my specification, it will be seen that even in those particulars Mr. Foster has been anticipated by me. The following words will be found in it: 'the gate, or part which holds the chisels, may be worked by treadle and spring, to raise the gate.'"Independently, therefore, of the general structure of the machine being similar to mine, it will be at once evident that in the points specifically claimed by Mr. Fost, the ground had been clearly and distinctly pre-occupied by me...' |
|
