US Patent: 924,767
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| Hacksaw Machine
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Patentee:
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| Anton Gruitsch (exact or similar names) - Buffalo, Erie County, NY |
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Patent Dates:
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| Applied: |
Aug. 16, 1907 |
| Granted: |
Jun. 15, 1909 |
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Joel Havens
"Vintage Machinery" entry for Buffalo Specialty Co.
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Description: |
| This hacksaw was also patented in Great Britain, patent #'s GB-190,823,018 & GB-190,802,813.
Abstract:
This invention relates more particularly to a hack saw machine having two saws by which stock of different kinds or sizes can be operated upon at the same time, although some of the improvements are equally applicable to machines having a single saw.
The principal object of my invention is the provision of a compact and convenient machine of this character which can be cheaply produced.
A further object is to provide the driving connections of the saws with efficient means which permit one of the saws to be manually thrown out of action while the other continues in operation and which may also be combined with trip devices for automatically throwing one or both saws out of action when the bars or other objects have been severed.
A further object is to so construct the driving mechanism that the saws are subjected to pressure during their effective stroke and relieved from pressure during their return stroke, thus ensuring rapid cutting, while at the same time preventing unnecessary wear of the saw blades.
Claim:
In a sawing machine, the combination of a main frame, a saw-frame guided thereon and having a coupling pin, a driving member, and. a link detachably connecting the saw frame with said driving member, said link having a longitudinal slot arranged to receive said coupling pin in the inoperative position of the link and said slot having transverse portion adapted to interlock with said coupling pin. |
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