US1177302A - Tool. - Google Patents

Description

L. CARSKI. V

TOOL.

APPLICATION FILED $EPT. I8, I9I5.

-. 1;] 77 3()2 Patented Mar. 28, 1916.

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LEO CARSKI, OIEYHAGERSTOWN, MARYLAND.

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Specification of Letters-Patent.

Patented Mar. 28, 1916.

Application filed September 18, 1915. Serial No. 51,456.

To all whom it may concern Be it known that I, LEO CAnsKI, a citizen of the United States, residing at Hagers= town, in the county of \Vashington and State of Maryland, have inventedcertain new and useful Improvements in Tools, of which the following is a specification, reference' being had to the accompanying draw- IIIOS.

'This invention relates to an improved tool and more particularly to pliers for use by piano repairers, the invention having for its primary object to provide in a tool of this character, simple and reliable means for easily and quickly extracting pivot pins from bearings without destroying the same or mutilating the felt bushings in which said pins are fitted.

The invention has for a further object'to provide means on the pliers for the above designated purpose, embodying an adjustable element on one of the plier sections whereby hearings or treads of different sizes may be properly positioned thereon, and an adjustable element on the other plier section carrying a'displacing pin adapted to engage the bearing pin when the'plier handles are forced together.

The invention has for an additional object to provide upon a tool of the above character'having confronting gripping jaws, rela-' tively adjustable cutter blades for conveniently cutting piano wires and the like, and additional adjustable cutters mounted upon the handle portions of the tool for cutting off the protruding ends of bearing pins.

With the above and other objects in view, my invention consists in the novel features of construction, combination and arrangement of parts to be hereinafter more fully described. claimed and illustrated in the accompanying drawing, in which, s

Figure 1 is a plan view of a tool constructed in accordance with the preferred embodiment of my invention; Fig. 2 is a longitudinal section taken on the line 2-2 of Fig. 1; Fig. 3 is a section taken on the line 3-3 of Fig. 1; Fig. 4 is a detail perspective view of one of the plier jaws; Fig. 5 is a similar view of one of'the adjustable cutter blades; and Fig. 6 is a detail perspective view of the pin block. j

Referring in detail to the drawing, 5

designates two similar tool handles which are provided adjacent one of their ends with laterally oflset intersecting portions 6 arranged in superposed relation and connected together by the pivot pin 7. Upon the confronting faces of these intersecting portions 6 of the tool members, disks of leather or other fibrousanti-friction material 8, are secured. Beyond the pivot pin 7, each of the handle members is provided with a straight. longitudinally extending portion 9 tersected by a relatively wide recess 14 in:

the face of the handle member. Adjacent to the opposite ends of the groove 13, threaded openings 15 are provided in the handle to receive a pivot screw 16. whereby the adjustable element 17 is attached to the handle member. This element'17 is provided with a longitudinally extending, open-ended slot 18 approximately of the same length and width as the groove 13. Upon the confronting face of the other handle membe'r 5, a block 19 is pivotally mounted by means of a screw 20. One end of said block is reduced, as at 21, and provided with the spaced openings 22 to receive an unthreaded section of the shank of the screw. By engaging the screw through either one of these openings, it will be understood that said block may be longitudinallyadjusted upon the handle member. In the opposite end of the block, an inwardly projecting, obliquely disposed pin 23 is fixed at one of its ends.

In Fig. 1 of the drawing, I have'indicated a section of a rocker arm A such as is usually found in piano movements, and the bearing B in which said arm is mounted, said bearing conslsting of a block having spaced arms between which the rocker arm permit of its subsequent use.

is engaged and held by means of the pivot pin indicated at b. In order to render the movement silent in its action and obviate friction, the ends of the pins 6 are customarily seated in felt bushings arranged in the openings of the bearing arms. The extremities of the pivot pin are flush with the outer faces of the bearing arms and it is, therefore, very difficult-to remove the pin without mutilating and frequently destroying the felt bushings in suchmanner as to preclude the possibility of their subsequent use. It is mainly for the purpose of providing a convenient tool whereby the pins may be removed and again subsequently used, that the present invention has been devised. As shown in Fig. 1, the bearing member B, when of considerable width. is arranged with one of its arms seated in the recess 14 of the handle member, the element 17 being turned upon its pivot 16 to an inoperative position as shown in Fig.2. The block 19 having been properly adjusted, the handle members 5 are pressed trgether so that the pin 23 will strike squarely upon the end of the pivot pin 6 and force the same through the bearing to project its opposite end into the groove 13. The pin 23 is of considerably less diameter than the pivot pin Z) so that the pin 23 will not engage the felt bushing. Having thus projected the end of the pivot from oneside of the bearing, the bearing is removed from its position between the handle members and this projecting end of the pin engaged between the extremities of the jaws 10, said pin fitting into the longitudinal grooves 12 in the inner faces of said jaws. By the provision of these grooves, the pin may be tightly clamped and extracted from the bearing without roughening or, in any way, mutilating the surface of the pin which must be absolutely smooth and unbroken in order to lVhen the hearing or other part carrying the pin is relatively narrow, the element 17 is turned to the position shown in dotted lines in Fig. 2.'and the bearing arm is engaged upon this element with the pivot pin in line with the slot 18 which is in registering relation with the groove 13. Thus, the opposite end of the pivot pin may be engaged by the pin 23 when the handle members are closed and forced through the bearing as above extions 9 of the tool is provided in one face with a recess 25 to receive one of the cutting.

30 which are securely held in positionupon 1 the shoulders 29 and in the reduced ends 27 V of the recesses 25 by screws 31 which are threaded into the jaw members of the tool. The inner confronting edges of the cutting blades 24 are tapered on opposite sides to produce the cutting edges indicated at 32. These cutting blades are employed in the cutting of piano wire or other exposed metallic parts to which access may conveniently be obtained. When the cutting edges of the blades require sharpening, they may be removed from the tool members and, after being sharpened, replaced thereon. In order that the cutting edges of these blades will properly co-act after being sharpened, filler plates 33 are provided which are adapted to be disposed between the shoulders 26 and the opposed end edges of the blade on opposite sides of the recess '28 therein.

In addition to the cutting blades-32 above referred to, I also provide a second set .of

c tting blades '34 which are mounted upon the corresponding faces of the handle members 5, preferably at a point between the pivot pin 7 and the pin projecting device above described, in-precisely the same manner as t e blades 24 are mounted in the tool jaws. The'blades 34, however. slightly differ from the cutting blades 24, in that'thci fo mer ha e their cutting edges beveled in only one direction, said bevels extending inwardly from the outer faces of the plate toward the inner faces of the handle members. These cutting blades 34 are primarilv provided'for the purpose of cutting off the ends of pivot pins which may project'to a very slight extent from the bearing in which thev are mounted, and it will be understood that. as the blades 34 are countersunk in the handle members, their outer.

faces at the cutting edges thereof can be enga ed directly against the bearing member.

From the foregoing description, taken in connection with the accompanying drawing,

it is believed that the construction, manner' of operation and several advantages of my improved tool will be'clearly and fully understood. It will be seen that I have produced a device which ishighiy serviceable and convenient in practical use, particularly when employed by piano repairers.

The several parts of the tool areexceedingly simple in form and can be readily re placed when necessary at nominal cost. The tool is also very durable in use as well as efficient and reliable in its operation.

While I have shown and described the preferred construction and arrangement of theseveral elements employed, it is to be understood that the device is susceptible of many modifications therein and I, therefore, reserve the privilege of adopting all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed.

Having thus fully described my invention, what I desire to claim and secure by Letters Patent is 1. The combination with a tool including relatively movable handle members, of an inwardly projecting pin carried by one of the handle members and obliquely disposed with respect thereto, and adjustable means on the other handle member whereby bearings having pivots of varying lengths may be properly positioned so that the bearing pivot will be in axial alinement with and engaged by the pin on the first named handle member and projected from the hearing when the handle members are forced toward each other.

2. The combination with a tool including opposed relatively movable parts, of a pin extending inwardly from one of said parts and obliquely disposed with respect thereto, means whereby said pin may be adjusted longitudinally with respect to the said parts, and means for seating a bearing upon the confronting face of the opposed part in a. stationary position with respect to said part, whereby a pin in the hearing will be engaged and forced from the bearing by said first named pin when the parts are moved toward each other.

3. The combination with a toool including opposed relatively movable parts, of a block, a pin fixed in said block and obliquely projecting from one side thereof, means whereby said block may be adjusted longitudinally upon the inner face of one of the parts and secured thereto, the other of said parts being provided with means on its inner face for arranging bearings of difi'erent widths thereon and in a stationary positicn with respect thereto so that the pin in the bearing will be engaged and projected from the bearing by the pin on said block when the parts of the tool are moved toward each other.

4. The combination with a tool including relatively movable handle members, of means on the inner face of one of the handle members for positioning a bearing thereon,

and an inwardly projecting obliquely disposed pin carried by the other handle member and longitudinally adjustable with respect tothe confronting face thereof adapted to engage a pin in said bearing and project the same therefromwhen thehandle members are forced toward each other.

5. The combination with a tool including opposed relatively movable handle members, of an inwardly projecting'pin mounted upon the inner face of one of the handle members, and means for properly positioning bearings having pivots of relatively different lengths upon the confronting face of the other handle member whereby the pivot pin will be in axial alinement with and engaged by the pin on said handle member when the handle members are forced together and the pivot pin projected from the bearing. 7

6. The combination with a tool having relatively movable handle members, one of said handle members being provided in its disposed pin longitudinally adjustable upon the confronting face of the other handle member to engage the pivot and project the same from the bearing into said socket.-

7. The combination'with a tool having opposed relatively movable handle members, one of said members being provided in its inner face with a socket, of an inwardly projecting obliquely disposed pin mounted upon the confronting face of the other handle member, and a pivoted element on said first handle member to be arranged with respect to said socket whereby bearings hav ing pivots of relatively different lengths may be arranged upon said handle member and the pivot axially alined with and engaged by said pin when the handle members are forced toward each other to project the pivot from the bearing into said socket.

8. The combination with a tool having opposed relatively movable handle members, of an inwardly projecting obliquely disposed pin longitudinally adjustable upon the inner face of one of the handle members, and a longitudinally slotted plate adjustably mounted upon the confronting face of the other handle member upon which a bearing carrying a pivot is adapted to be engaged, whereby the pivot will be engaged by said pin when the handle members are forced together and projected from the bearing.

9. The combination with a tool having opposed relatively movable handle members, of a block carried by and longitudinally adjustable upon the inner face of one of the handle members, an inwardly projecting obliquely disposed pin fixed in said block,

'1 socket whereby bearings of difierent Widths the other offsaidhandle rmembersvbeing proforcec'ttoward each other to project the pivot vided in its confrontingface' with a socket, from the-bearing into said socket. 10 a slotted plate, and means for adjustably Ila-testimony whereof I hereunto afiiX my pivoting vsaid plate with respect to said signature in the presence of twowitness'es.

- LEO CARSKI; V

carrying pivots maybe arranged upon the W'itnesses: latterhandle member and the pivot engaged OSCAR WENDELER, by said pin when the handle members are OSCAR G. KoBsA;

popies vof this petent play be obtained fol-five cents each, by addressing the-Commissioner oftratents,

' Washington, I). 0. I

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