US630538A - Mortising-machine. - Google Patents

Description

No. 630,538. Patanted Aug. 8, I899. W. D. HERSCHEL.

MORTISING MACHINE.

(Application filed Sept. :3, 1896.) (No Model.) 3 She ets$haet I.

WITNESSES i ATTORNEY.

THE NORRIS PETER? CO PN'IYI'IIJ LIINOvv WASHINGTON, [IV C.

No. 630,538. Patented A u Qa, |a99.

w. n. HERSCHEL.

MURTISING MACHINE.

(Application filed Sept. 8, 1896.) (No Model.) 3 Sheets-Sheet 2.

WITNESSES r @Qfi 0/ 0. M 4 BY W ATTORNEY. y

no: NORRIS flEr:ns w., Puo'romma. WASHINGTON, n7 1:,

No. 630,538. I Patented Aug. 8, I899. W. D. HERSCHEL.

MOBTISING MACHINE.

(Application filed Sept. 3, 1896.)

WITNESSES:

a. Zfiw THE NoRR s Fcrzns 00.. wnmuma, Wmmna'rou, n. c.

UNITED STATES PATENT OFFICE.

WILLIAM D. HERSOHEL, on PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JOSEPH 0. COLLADAY, OF SAME PLACE.

MORTlSlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 630,538, dated August 8, 1899..

' Application filed September 3 1896. Serial No. 604,703. (No model.)

To all whom it may concern:

a citizen of the United States, residing in' the city and county of Philadelphia, State of Penn sylvania, have invented a new and useful Im provement in Mortising-Machines, which im;

provement is fully set forth in the following specification and accompanying drawings.

My invention relates to mortising-machines; and it consists in novel improvements of the same whereby the vibrations usually incident to the operation of machines now in use are entirely obviated or reduced to a minimum, the crank-shaft employed being provided with an outside bearing and a counterbalance being carried in the pulley, which is on the opposite side of and about equally distant from a bearing of the shaft from the crank instead of at the crank, thereby insuring a much smoother running machine, avoiding the employment of a separate counterbalance, and making the machine more compact, while the wrist-pin is most convenient of access, so that it may be turned ofi with a shorter tool than that permitted where a counterbalance exists on each end of said wrist-pin.

It further consists of novel devices for hold: ing the work in position during the operation of the machine.- Figure 1 represents a side elevation of the upper portion of a morti'sing-machine, showing especially the crank-shaft and ,its adjuncts, embodying my invention. Fig. 2 represents a side elevation of the pulley and its counterbalance. Fig. 3 represents a section on line a; a, Fig. 2. Fig. 4 represents a front elevation of the lower portion of the machine, showing the work in position. Fig. 5 represents a side elevation of Fig. 4:.

Similar letters of reference indicate corresponding parts in the several figures.

Referring to the drawings, A designates a standard of a mortising-machine, the same having attached in any suitable manner to the upper portion thereof the brackets B and O, the latter being provided with the arms D and E, in the upper: portion of which is supported the crank-shaft F, the same also having a bearing in the upper portion of the rmB ' G designates a-loose pulley, and H a tight fpulley, looth of which are mounted upon said fcrank-shaftimmediately over the standard A, said tight pulley being secured thereto in any suitable manner.

J designates a counterbalance which is car ried on the pulleyH as part of the web thereof, the remaining portion K of the web being most plainly shown in Figs. 2 and 3. The

vertical center line of said counterbalance is at substantially the same distance from and on opposite sides of the bearing of the shaft on the arm E as the center of the pitman M on the crank, and the counterbalance being also diametrically opposite the side of the shaft on which the crank is located.

L designates the crank portion of the shaft F, which is located between the bearings D and E, said crank being in engagement with an end of-the connecting-rod or pitman M, by means of which the proper operative portions of the machine are actuated, a detailed description thereof being omitted, since the same forms no part of the present invention.

The vertical central line of the arm E is close to or in plane with the side of the standard A, sorthat the balancing-point of the counterweight and pull of the pitman is within said standard.

The operation is as follows: When the pulley H is rotated, which can be efiected by any suitable means, the shaft F and the crank L rotate in unison, and the counterbalance J being always located on its pulley diametrically opposite to the wrist-pin of crank L it will be seen that a uniformity of movement is secured and a very much smoother running machine is obtained than where the balance is carried at the crank, as is customary. The counterbalance may be adjusted with nicety in reference to the Wrist-pin of the crankshaft by turning the pulley that carries it, and when the adjustment is accomplished the hub of the pulley is secured to the set place on the shaft by a bolt'or screw, and thus the counterpoise retains its adjustment. It will furthermore be apparent that by counterbalancing the pulley H and mounting the same in the manner describednamely, directly over the standard A, between the arms B and E, which are on opposite sides of the standardthe said location of the same will have a tendency to reduce to a minimum all the vibrations incident to the shaft, and thereby the machine, which has heretofore been a great detriment to the successful operation of the machine and resulted in the production of inferior work.

In Figs. 4 and 5 I show a novel attachment to the saddle of the machine, which is designed to hold the work in place on the table. A designates the standard, as before, upon which is supported the vertically-adjustable saddle R. On the side thereof are the lugs or eyes Q, which serve as guides for the holders S, which latter pass through said lugs and are held in the desired position by set-screws or similar devices. The upper extremities of each of said holders have the laterally-deflected portions T, from which depend the members U, which are adapted to bear upon the Work I and hold the same in the desired position. N designates the table for supporting the work, the same being secured to a slotted plate which is pivotally mounted on the saddle R, and thus operative independently of the holders S, the latter thus being adapted to be set relatively to the work, regardless of the adjusted position of said work.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a mortising-maehine, a standard,aruis rising therefrom and a shaft with a crank mounted on said arms, in combination with a fixed pulley and a counterpoise both carried by said shaft directly over said standard, said counterpoise being diametrically opposite to the wrist-pin of said crank, and being inclosed within the peripheral rim of said pulley and constituting portion of the web of the latter.

2. A mortisin g-machine having a standard, a saddle vertically adjustable thereon, eyes on the sides of said saddle, holders vertically adjustable in said eyes, said holders having laterally-deflected and depending ends, and a table mounted on a plate pivot-ably eonneeted with said saddle and independent of said holders.

\VILLIAM l). IIERSCIIEL.

\Vi tnesses:

HOWARD S. COLLADAY, .ToHN A. WIEDERsHEIM.

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