US1212123A

US1212123A - Clamp.

Info

Publication number: US1212123A
Application number: US9757016A
Authority: US
Inventors: Enoch J Anderson
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-05-15
Filing date: 1916-05-15
Publication date: 1917-01-09
Anticipated expiration: 1934-01-09

Description

E.1.ANDERSON.

CLAMP.

APPLICATION FILED MAY 15. 19w.

Patented J an. 9, 1917.

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EnooH J. ANDEEson, or WORCESTER, MAssAcHnSETTs.

CLAMP.

Specification of Letters'Patent.

Patented Jan. 9, 1917.

Application filed May 15, 1916. j Serial No. 97,570.

to provide a clamp having a movable jaw' that is capable of being moved back and forth with any desired degree of rapidity,

and that will positively hold when the pressure is put on the jaw; also to provide an improved form of jaw in which thetwo parts ofwhich it is made are connected together in such a way as to be accurately guided with respect to each other, and in which the connection between the two parts is improved so as to provide for moving the movable part with any degree of speed, and prevent its being dislodgedfrom the relativ'ely stationary portion which is slidable along the clamp bar; and especially to provide an improved nutand screw connection between these parts of such a nature: that the same can be adjusted out and in very readily to change the point of application of pressure and yet be capable of being ap plied in a convenient manner on assembling the parts.

Further objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawingsin which Figure 1 is a side'elevation of. a preferred embodiment of this invention; Fig. 2 is a plan of the same, showing the movable aw in section on the line 22 of Fig. 1; Fig. 3 is a sectional view on the line 3.3 of Fig. 2, and Fig. 4 is a rear end view of one of the jaws.

The invention is shown as applied to a p'attern-makers clamp involving a main bar 10 which preferably is hollow throughout its length, and a stationary jaw 11 integrally mounted on the end of the bar. This bar is provided with a series of narrow teeth 12 along its upper edge. The movable jaw comprises two

parts

13 and 14. The member 13 is simply a casting having an inclined projection provided with a passage through it for the bar 10. Integral teeth 15 are located along the lower side of the upper edge of said passage, said teeth being of twice the pitchof the teeth12 so that they will fit alternate teeth 12 in the manner indicated more clearly in Fig. 3. This member 13'is a box-like structure having side and end walls which inclose the space within it which receives the movable part 14 of this jaw. The member 13 also is provided with a slot 16 along its rear surface having a circular enlargement 17 at the end The member 14 or jaw proper'ls provided with a fiat operative surface projecting from a main portion of the jaw which'telescopes within the space in the member. 13 above described. This telescoping portion is provided with a longitudinal passage for holding a nut 21, the passage extending from the lower end to the upper end where it opens out through the end for a purpose to be described. This nut fits within the member 14, and is adapted to slide along the passage therein. It is'provided with an integral eX- tension 22 at one side having two

lugs

23 and 24 projecting from one face thereof. At the end it has a projection 25. When the malleable iron nut is cast this projection 25 is perpendicular to the arm 22, but is designed to be bent over as shown in the drawings to clamp a spring 26 between it and the lug 24. This forces the spring back also against the lug 23, and leaves its end projecting so as to engage the inner surface of the jaw 14. Thus it normally presses the nut against the shoulder of the member 14 by constant spring pressure, so that it will not get dislodged too easily. For the purpose of securing the nut a'screw 30 is shown. This screw is provided with an enlarged collar 31 circular in form, preferably, and

with a winged end 32 for manipulation.

This collar 31 is adapted to move in through the circular slot 17 so as to come in behind the slot 16 and be guided between the inner surface of the member 13 and two walls 33 projecting inwardly from that member.

The operation of the device is very simple. The member 13 can be swung over at the top toward the I stationary jaw 11 and then moved back and forward along the bar 10 as far as may be desired. \Vhen it is swung back its teeth 15 will catch into the teeth 12 and hold it against further motion backwardly although it can be moved up toward the jaw 11 without trouble. Pressure is applied by turning the screw 30, which has aleft-hand thread, preferably. In this way the screw is threaded in the proper direction to force the jaw 14 toward the jaw 11 by turning the screw in the natural direction, while the member 13 remains stationary. Vhen thescrew 30 is loose it can be moved out and in along the slot 16 without becoming disengaged and then pressure can be applied at any desired distance from the bar 10. In assembling the parts the nut 21 is first placed in the jaw member 14, and then the screw is inserted through the hole 17 and moved up into the slot 16. This screw is then brought into registration with the nut, which is easily done, because the nut is not threaded clear to its end. The screw can then be turned to bring the two parts together. If desired the screw and nut can be moved out to the end of the jaw 14 which is open at the end, and thescrew headed or riveted over so that it is permanently engaged with the nut, and then these four elements are thereafter inseparable, although readily adjustable with respect to each other.

With this construction the adjustment of the parts is very simple and convenient, and the final application of pressure to the clamp is provided for in such a mannerthat it is manipulated readily either by skilled or unskilled workmen. No parts are likely to be lost, and the constructionis inexpensive and mechanical. The housing'of the part of the jaw 14 inthe member 13 provides for guiding these parts withrespect to each other,

and adds to'the convenience with which the tool may be used;

7 Although I have illustrated and described. only a single embodiment of the invention I am aware of the fact that'many modifications can be made therein bygany person skilled in the art without departing from the scope of theinvention, as expressed in the claims. ThereforeI do not Wish to be limited to all the details of construction herein shown and described, but} Q .VVhatIdo claimis:v T V W 1; As an article of manufacture, a hand clamp comprising a bar having teeth on one 7 edge, a j awmounted at one endthereof, and a l a movable jaw memberjcomprlsmg two main parts, a member-having a passage therein 77 "for receiving the barwhereby said member is slidable along the bar and having in the surface which engages the toothed edge of the bar a plurality of teeth having a pitch consisting of a multiple of the pitch of the teeth on the bar, and a jaw member movably connected therewith and carried thereby.

As an article of manufacture, a hand clamp comprising a toothed bar provided with a jaw thereon, a member readily adjustable along said bar and having a casing-like form, a jaw provided with a main body located within the casing of said movable member and adjustable therein toward and from the first named jaw, said movable jaw being provided with a longitudinal passage, a nut in said passage, and a screw connected with said nut and with said movable member, said nut being slidable with the screw along said passage for adjustment.

3. As an article of manufacture, a hand clamp comprising a bar and jaw connected together, a member movable along the bar, a movable jaw adjustably carried by said member, said movable jaw having a. longitudinal passage therein, a nut slidable in said passage, and a left-handed screw connected with said nut having an enlarged collar therein, said movable member being provided with a pair of guides for the opposite sides of said collar.

4:. As an article of manufacture, a hand clampcomprising a bar and jaw connected together, a member movable along the bar, a movable jaw connected with said member, said movable jaw having a passage therein, a nut slidable in said passage, a screw connected with said nut having an enlarged collar thereon, said movable member being provided with a pair of guides for the opposite sides ofsaidcollar, and with a longitudinal slot between them. for the screw, said slot having an enlargement at the end near the bar for permitting the collar to be introduced.

' ,5. As an article of manufacture, a hand ably carried by said member, said movable jaw having a longitudinal passage therein open at its outer end, a nut slidable in said passage, a left-handed screw connected Wlth said nut havlng an enlarged nut thereon projecting through said nut and headed over at'its end, said movable member being provided with a pair of guides for said collar, said nut having a projection therefrom, a pair of lugs on said projection, means on said projection for securing a spring against one of said lugs and a spring secured against one of said lugs and bearing against the other and also bearing at its free end on the inner side of said movable jaw.

In testimony whereof I have hereunto set my hand.

ENOOH J. ANDERSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G."