US999978A

US999978A - Vise.

Info

Publication number: US999978A
Application number: US51939509A
Authority: US
Inventors: Ebenezer Fisher
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-09-24
Filing date: 1909-09-24
Publication date: 1911-08-08
Anticipated expiration: 1928-08-08

Description

J5A f E. FISHER.

VISE.

APPLIOATION FILED s221224, 190e.

i Patented Allg. 8, 1911.

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Patented Alg. 8,*1911.

3 SHEETS-SHEET 2.

' E. FISHER.

VISB.

APPLICATION FILED SEPT. 24, 1909.

@fuif/Waimes EBENEZER FISHER, OF EGG HARBOR CITY, NEW JERSEY.

VISE.

Specification of Letters Patent.

Patented Aug. 8, 1911.

Application led September 24:, 1909. Serial No. 519,395.

To all whom it may concern:

Be it known that I, Ennnnznn FISHER, a subject of the King of Great Britain, residing at Egg Harbor City, in the county of Atlantic and State of New Jersey, have invented certain new and useful Improvements in Vises, of which the following is a specification.

This invention relates to improvements in vises and other clamping devices in which a sliding jaw is employed. Heretofore, in devices of this character the movable jaw is generally actuated and held by pressure applied thereto in a direction which, while advancing the same, fails to apply at all times a seating pressure of the movable jaw upon its base, with the result that such movement of the jaw takes place under the clamping strain as to throw the clamping face of the movable jaw out of parallelism with the clamping face of its opposing jaw, thereby causing the clamping action to be present upon a part only of the clamping surface of the jaws and the work held therebetween with the consequent effect of insecure clamping of the work or the mutilation thereof from the necessity of undue clamping strain.

Therefore, the principal object of the present invention is to provide a simple construction of clamping device in which the movable jaw member may be quickly positioned upon its base and be actuated for clamping by the application of a pressure applied at a downward inclination thereon so that while advancing the movable jaw member it will force the same at all times to its base and thereby maintain the parallelism of the clamping faces of the aws and also render ineffective looseness or wear of the parts, which is the chief defect of wrenches generally.

The invention consists in so combiningthe movable jaw member of a clamping device with its base and its actuating means that the pressure of the actuating' means upon the movable jaw member will be on a downward inclination at all times; and the invention further consists in providing` adjustable locking means by which the actuating means is secured to the base of the clamping device and which under the strain of the actuating device in applying pressure to the movable jaw on a downward inclination will the more firmly bind the actuating device to the base and without caus# ing the actuating device to have any movement away from the base, thus providing against any movement of the actuating means that will be in opposition to its application of pressure upon the movable jaw at a downward inclination.

The invention also consists of certain other novel features in the arrangement and construction of parts, all as hereinafter de.

scribed and specifically set forth in the appended claims.

In the accompanying drawings illustrating my invention, Figure 1, is a view in side elevation of a vise constructed in accordance with the invention, Fig. 2, is a vertical longitudinal section taken centrally of Fig. l, Fig. 3, is a top View, Fig. 4f, is an end View, Fig. 5, is a detail, showing in perspective the ratchet block with the actuating screw, Fig. 6, is a perspective view showing a portion of the bed of the vise with its movable jaw thereon, Fig. 7, is a detail showing the teeth of the ratchet bar and ratchet block in their closest engagement, Fig. 8, is a detail showing the position of the ratchet teeth in their initial engagement.

Referring to the drawings, l designates the base or bed portion of the device having a fixed aw 2 at one end. The bed portion is preferably formed of two integral parts l and 1b having a slot 3 formed between them, into which slot is secured a rack-bar 4L so as to be spaced apart from the two parts of the bed portion, and this rack-bar is held by means of the tapering

bolts

5 and 5, which also serve to bind the two portions of the bed together.

6 designates the movable 'jaw slidably mounted upon the bed, and is preferably formed with the two foot extensions 6a and 6b extending on each side of the slot 3 for the purpose of securing a rmer seating of the jaw on the bed while under strain.

The means for actuating the movable jaw member consists of the screw 7 operating in the threaded bore 8 in the locking ratchet block 9. This actuating screw is arranged to lie at all times in the slanted position shown, so that its forward end face 7 a when brought into contact with the movable jaw, will be against the bearing face 6 of said jaw which face is at right angles to the axis of the screw 7 By this arrangement of actuating screw and bearing faces the pressure applied to the jaw 6 is in a forward and downward direction which while advancing the jaw holds it to its bed. This principle of action presupposes that duringl the application of pressure the screw 7 will not be movable away from the bed as any such movement, tilting or otherwise,` at the point of pressure during the application of pressure will defeat this principle of operation. It has therefore been provided that the pressure in clamping` will in its backward push upon the rack bolt 9 force the same at all times firmly downward upon the rack-bar, and firmly clamp the rackblock and rack-bar together. This is accomplished by forming the resisting walls of the teeth of the engaging racks on an incline so that by their overhang one upon the other they will interlock and at the same time draw together under the clamping strain, as more fully illustrated in Figs. 7 and 8, which show in detail the loose position of the engaging' racks, and the position when under pressure.

The ratchet block 9 is preferably channeled from its underside to receive and hold the rack bar 10, the same being secured therein by bolts 11, and this rack-bar is seated sufficiently within the channel to permit the ratchet bloclr to straddle the rack bar 4, thus maintaining the said block with its actuating' screw in operating position thereon at all times and permitting the ready placing of the block at any part upon the rack 4.

The base or body of the device is provided at its fixed jaw with a downward cylindrical extension 12 which forms a pivottherefor and which is seated wit-hin a hollow cylindrical support 13 having aV base 14- for the firm attachment thereof to a work bench or other suitable fixed support. For the purpose of effectively and quickly binding the bed of the device at any position at any angle to which it may be turned, t-he hollow support member 13 is provided with a boss 15 in which and extending through the wall of the supporting' member is a bore 16 formed on a downward inclination and partly threaded to receive a binding screw 17. The pivot member 12 .is provided with an annular groove 18 to register with the opening of the bore 16 and presents a beveled face that is at right angles with the axis of said bore and receives in bearing' contact therewith either the set screw 17 or preferably as shown a small cylindrical bearing block of hard fiber or other suitable material which will lie partly in the said annular groove and partly in said bore and be operated upon by the screw to bind the parts in fixed relation. It will be understood that by reason of the application of a binding pressure downward as well as inward the pivotal member 12 is not only acted upon but that portion of the base or bed of the device resting on the top of the cylindrical support 13 will be also forced down into binding' contact therewith.

The cylindrical support 13 is provided with an annular bevel 1.9 at its base for the purpose of providing a bearing for a strut 2O which extends downward from the overhanging portion of the bed of the device where it is cletachably held against a shoulder or fheel 21 by the set screws QQ. At the lower end the strut 2O is formed to fit the curve of the annular1 bevel 19 and while giving support to the outer end of the bed of the device also causes binding to take place as the result of any strain applied downward upon said bed to bring about an automatic binding of t-he device upon its support, which will prevent accidental rotation.

I am aware that it is not new to arrange the actuating screw of a clamping' device upon an incline nor to cause the adjustable means for supporting the actuating screw to lock upon the base of the clamping device under the pressure of the said screw. The present invention while involving said features provides a construction that prevents any raising or tilting of the actuating screw support and for this purpose makes provision for a slight lowering movement thereof, so that the direction of the line of force of the pressure upon the movable jaw will be always forward and downward thereon, as any interruption of this action, as by a temporary lifting of the actuating screw would be unproductive of the ends attained by the invention.

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

1. In a clamping device, t-he combination with a bed member carrying a jaw and a ratchet face, of a cooperating jaw slidably mounted on said bed member and free of operative engagement with the teeth of said ratchet face, a support adapted to engage the teeth of said ratchet face and to interlock therewith under rearward pressure on said support, and an actuating screw operatively mounted in said support on a downward inclination and adapted to apply pressure upon said sliding aw in the direction of said inclination, substantially as described.

2. In a clamping device, t-he combination with a bed member carrying a jaw and provided with ratchet teeth having retreating inclined retaining walls, of a coperating jaw mounted to slide on said bed member without engagement with said ratchet teeth, means for actuating said jaw, adapted to apply its actuating pressure on a downward inclination, and a locking support for said actuating means, adjustable on said bed member and provided with ratchet. teeth for cooperating' with said bed ratchet and having the retaining walls thereof similarly inclined, whereby the actuating means in forcing the support backward will exert a downward pressure on said support, substantially as described.

3. In a clamping device, the combination with a bed member carrying a jaw, and having a longitudinal slot formed therein, a

ratchet bar secured within said slot and in spaced relation t0 the walls thereof, a sliding jaw mounted on said bed, a ratchet member for engagement with said ratchet bar adapted to extend into said slot upon each side of said bar, and an actuating screw arranged upon a downward incline with relation to the sliding jaw, whereby to apply pressure thereto in the direction of the said inclination, substantially as described.

In testimony whereof I afiix my signature in the presence of two witnesses.

EBENEZER FISHER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.