US116824A - Improvement in copying-presses - Google Patents

Improvement in copying-presses Download PDF

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US116824A
US116824A US116824DA US116824A US 116824 A US116824 A US 116824A US 116824D A US116824D A US 116824DA US 116824 A US116824 A US 116824A
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handle
press
copying
presses
improvement
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means

Definitions

  • the invention relates to the application of a ratchet-wheel firmly secured to the screw or handle Oi' the press, and a spring, made fast in the handle Or screw, aetin g on the ratchet-wheel, and when more force than is necessary is applied to the handle of the press it slips past the teeth of the ratchet-wheel, allowing the handle of the press to move without increasing Athe pressure on the platen of the press and prevents the platen being broken by over pressure; or by using a spiral spring and bolt in the handle ofthe press the saine effect will be produced.
  • Figure l represents a side view of a copyingpress embodying my invention.
  • Fig. '2 represents the handle removed from the press.
  • Figs. 3 and 4 show another application of ratchetwheel and spring, which is fully explained in the general description.
  • FIG. l A A represent the handle of the press.
  • B represents the ratchet-wheel firmly secnred to the screw O of the press.
  • D a ilat spring made fast in the handle A A. This spring slips past the teeth of the ratchet-wheel, allowing the handle of the press to move without increasing the pressure on the platen E; or by using a spiral spring and bolt in the handle, as at d d in Fig. 2, the same e'ect is produced.
  • Fig. 2 represents the handle removed from the press, showing more fully the arrangements and parts. The same figures and letters apply as in Fig. 1. Figs.
  • a A the handle, with teeth cnt on the face7 acting' in the teeth of the collar B, which is made fast to the screw O of the press.
  • the handle A A is held in its place by the short spiral, marked d in Fig. 3, which allows the teeth to slip past when too much force is applied.

Description

UNITED STATES PATENT OFFICE.
JOHN FENSOM, OF TORONTO, CANADA.
IMPROVEMENT IN COPYING-PRESSES.
Speoication forming part of Letters Patent No. 116,824, dated July 11, 1871.
To all whom t may concern:
Be it known that I, JOHN FENsOM, of the city of Toronto, in the county of York, Province of Ontario and Dominion of Canada, have invented certain Improvements in Copying-Presses for Copying Letters, of which the following is a specification':
The invention relates to the application of a ratchet-wheel firmly secured to the screw or handle Oi' the press, and a spring, made fast in the handle Or screw, aetin g on the ratchet-wheel, and when more force than is necessary is applied to the handle of the press it slips past the teeth of the ratchet-wheel, allowing the handle of the press to move without increasing Athe pressure on the platen of the press and prevents the platen being broken by over pressure; or by using a spiral spring and bolt in the handle ofthe press the saine effect will be produced.
Figure l represents a side view of a copyingpress embodying my invention. Fig. '2 represents the handle removed from the press. Figs. 3 and 4 show another application of ratchetwheel and spring, which is fully explained in the general description.
Fig. l, A A represent the handle of the press. B represents the ratchet-wheel firmly secnred to the screw O of the press. D, a ilat spring made fast in the handle A A. This spring slips past the teeth of the ratchet-wheel, allowing the handle of the press to move without increasing the pressure on the platen E; or by using a spiral spring and bolt in the handle, as at d d in Fig. 2, the same e'ect is produced. Fig. 2 represents the handle removed from the press, showing more fully the arrangements and parts. The same figures and letters apply as in Fig. 1. Figs. 3 and 4, A A, the handle, with teeth cnt on the face7 acting' in the teeth of the collar B, which is made fast to the screw O of the press. The handle A A is held in its place by the short spiral, marked d in Fig. 3, which allows the teeth to slip past when too much force is applied.
The application of a ratchet-wheel and spring in any form to the screw and handle in copyingpresses, as herein set forth.
JOHN FENSOM.
Titnesses J AMEs TILT, GEORGE DAVIDSON.
US116824D Improvement in copying-presses Expired - Lifetime US116824A (en)

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