US Patent: 1,786,148
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| Station-Type Drilling and Tapping Machine
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Patentee:
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| Edward Payson Bullard, Jr. (exact or similar names) - Stratford, Fairfield County, CT |
| Assignees: |
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Bullard Co. - Bridgeport, Fairfield County, CT |
| Manufacturer: |
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Bullard Co. - Bridgeport, Fairfield County, CT |
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Patent Dates:
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| Applied: |
Dec. 22, 1928 |
| Granted: |
Dec. 23, 1930 |
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Joel Havens
Vintage Machinery entry for Bullard Machine Tool Co.
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Description: |
| Abstract:
This invention relates to improvements in automatic drilling, counterboring and tapping machines of the station type, and is designed more particularly for finishing radiator sections for steam and hot water radiators. The machine is a station type of machine including a suitable drive, feed works, indexing mechanisms and a rotatable carrier for supporting and conveying the work to be finished from one work station to another. It further includes a multiplicity of holding means for retaining the work in operative position, with respect to the cutting tools, and for holding the blanks during the cutting and indexing operations. The tools act simultaneously, though in two groups for different operations, one group for preliminary drilling operations and the, other group for tapping so that by different treatment of the two different types of tools the articles are successively completed. The purpose of the invention is to provide a machine whereby the required work upon such sections preparatory to assembling may be quickly, uniformly and accurately performed by a single operator who simply feeds the sections, one at a time, into one side of the machine. Further to utilize the cutting time of the machine for removing a finished piece of work and substituting a blank, and whereby the two said last named operations are performed simultaneously.
Claim:
In a machine of the class described, spaced apart frames, a rotatable work carrier mounted between the frames and having a series of work tables, means for indexing the carrier to move the work from one station to another for their respective operations, a series of tool heads arranged upon the front side of the machine on opposite sides of the carrier adapted for aligned drilling operations in opposite faces of the work, a series of tool heads arranged upon the rear side of the machine on, opposite sides of the carrier adapted for aligned tapping operations in opposite sides of the work when the latter has been moved from the front station to the rear, a drive shaft for each series of tool heads, a. feed shaft for each series of tool heads, and a variable speed feed works for each series of tool. |
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