US747915A - Type-writing machine. - Google Patents

Description

' 'Mk1/17,915. PATBNTED DB0.A22,11903.

- P. W..H1LLARD. TYPE WRITING MAGHINE.

APPLICATION FILED AUG. 18.1900.

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PATENTBD'DEG. 22, 1003.

I'. W. HILLARD.

TYPE WRITING MACHINE. MPL10/mon FILED AUG. 10. 1000.

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UNITED STATES Patented December 22, 1903.

PATENT OFFICE.

FREDERIC W. HILLARD, OF TOTTENVIDLE, NEW YORK, ASSIGNOR, BY MESNE ASSIGrNll/IENTS,l TO ELLIOTT-FISHER COMPANY, OF NEW YORK, N. Y., A

CORPORATION OF DELAWARE.

TYPE-WRITING yMACHINE.

SPECIFICATION forming part of Letters Patent No. 747,915, dated December 22, 1903 'Application tied August 1s, 1900. seria No. 27.319. ma model.)

To @ZZ whom it may concern.-

Beit known that LFEEDERIC W. HILLARD, a resident of Tottenville, inthe county of Richmond and city and State of New York, have invented certain new vand .useful Improvements in Type-Writing Machines, of which the'following is a specification.

My invention consists particulary in that style of type-writer illustrated and described in United States Letters Patent, as follows: No. 607,193, dated July 12, 1898;y No. 607,274, dated July 12, 1898; No'. 611,146, dated September 20, 1898; No.- 624,864, dated May 9, 1899; No. 624,865, dated May 9, 1899; No. 640,699, dated January 2, 1900; No..652,691, dated June 26, 1900. lt ismore especially directed to an actuator for the printing-hammer,which will be hereinafter described in detail and claimed.

In the accompanying two sheets of drawings,which form part of this specication,Fig ure 1 is a side view of the machine cut through its middle on a longitudinal plane, some of the parts being shown in cross-section, the

parts being in normal position, and someof "carrier, type-wheel shaft, printing-hammer,

and paper-carriage, all of the general construction.

The details of the machine need not be described,because the general construction and operation are familiar and will be understood from the drawings and by reference to the above-mentioned Letters Patent. v

The mechanism provided to eect the printing is as follows: The key levers A engage with a bail or universal bar. B, which is mounted on the end of. a pivoted lever C. This lever is pivoted between its ends, and the other end from that on which the universal bar is mounted actuates the printinghammer D to effect the printing. This lever also actuates a lock C' of the usual style to prevent rebound of the hammer. Instead of having` the hammer-actuating lever operate the hammer D directly lit does so through a camming-arm E or other suitable wedge member. This arm is pivoted back of and lower down than the pivotal point of the actuating-lever C. The free end of the cam- 1 ming-arm carries a wedge-face E', which contacts with a pin D' on the printing-hammer. It is also providedwith a pin E2, with which the end ofthe hammer-actuating levervC enengages when a type-key is depressed. The key-levers also actuate the type-wheel actuators A of the usual style through the intery `mediary of one or the other of two pivoted levers B', provided with bars B2, which ex- -tend under the key-levers on one side or the Aother of the machine.

and therefore c auses the wedge-face E to travel along the pin D' on the type-hammer.

Thewedge-face E is so shaped that during the first part of the movement the hammer advances slowly; but during the latter end of the-movement the hammer is Athrown rapidly toward the printing position. This position is shown in Fig. 2. The effect of this is to prevent the hammer from striking the paper before the type-wheel has been properly set and then tostrikeforcibly. As shown, this result is attained by making the length of the camming-arm between its contacting face E and its pivotal point E3 less than the distance between the contacting-point D of the hammer and the pivotal point D2 of the hammer. It is obvious that if the camming-arm E were pivoted far enough below the pivotal point of the hammer it would not be necessary that it should be shorter than the portion of the hammer referred to; but of course thedistance at which the camming-arm can be conveniently pivoted below the hammer is limited by the requirement of compactness in the machine. It will therefore be seen that the acceleration of the printing-hammer from the moment that it begins to move toward the printing position until the moment of prin ting is increased, particularly toward the end of the stroke on the keylever,and that this is accomplished by a camming member provided with a wedge-face of proper configuration and having a suitable path of travel. It is obvious that this wedge-face and its path of travel may be determined in respect to and be in engagement with the actuatinglever instead of with the printing-hammer, or the camming member might have two Wedge-faces, one engaging with the printinghammer and one with the actuating-lever.

What I claim, and desire to secure by Letters Patent of the United States, is-

1. In a type-writing machine, the combination of a key-lever, a key-driven printinghammer, an actuating-lever for operating the printing hammer, and a camming member interposed between the actuating-lever and the printing-hammer and constructed to accelerate the drive of the hammer up to the printing-point, substantially as described.

2. In a type-writing machine, the combination of a key-lever, a printinghammer, an actuating-lever through which the key-lever acts to operate the printing-hammer, and a speed accelerating member interposed between the actuating-lever and the printinghammer, said speed accelerating member being constructed to receive the thrust of the accelerating-lever and to transmit it to the printing-ham mer, substantially as described.

3. In a type-writing machine, the combination of a key-lever, a printing-hammer, an actuatinglever through which the key-lever acts to operate the printing-hammer, and a cam ming member interposed between the actuating-lever and the printing-hammer, the camming member being shorter than the distance between the point of the printing-hammer contacting therewith and the pivotal point of the printing-hammer, substantially as described.

Signed by me in New York city this 16th day of August, 1900.

FREDERIC W. HILLARD.

Witnesses:

THOMAS EWING, J r., SAMUEL W. BALCH.

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