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Publication numberUS1481553 A
Publication typeGrant
Publication dateJan 22, 1924
Filing dateOct 20, 1921
Priority dateOct 20, 1921
Publication numberUS 1481553 A, US 1481553A, US-A-1481553, US1481553 A, US1481553A
InventorsHanson Charles V
Original AssigneeHanson Charles V
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Quick-acting bolt clamp
US 1481553 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

1,481,553 22 1924 c. v. HANSON QUICK ACTING BOLT CLAMP Filed Oct. 20. 1921 Patented Jan. 22, 1924-.



Application filed October 20, 1921.

To all whom it may concern.

Be it known that I, CHARLES V. Hanson, a citizen of the United States of America, and resident of the city of Fall City, in the county of King and State of lVashington, have invented certain new and useful Improvements in Quick-Acting Bolt Clamps, of which the following is a specification.

My invention relates to quick acting bolt clamps or devices which are intended to be used in connection with a bolt as a quick actin means for securin the holdin down 6 f D action of the bolt, thus eliminating the time consumed in removing and replacing nuts and turning them down.

The object of my invention is to provide a device which may be used in certain situations and under certain conditions to apply and to relieve the holding action of the bolts in a quick and easy manner.

The features of my invention which The lieve to be new will first be described in the specifications and then particularly defined in the claims.

The accompanying drawings show my invention applied in constructions of somewhat varying form adapted for action under the same principle but under different conditions.

Figure 1 is a side elevation of a bolt having one form of my device applied thereto, showing the same in clamping or holding position.

Figure 2 is a side elevation of the bolt showing the clamping device in section on the plane indicated by the broken line 22 in Figure 1.

Figure 3 is a side elevation of a modified type of construction in which the same principle is employed.

Figure 1 is acentral section taken through the holding device shown in Figure 3.

Figure 5 is a device of the same general construction as that shown in Figures 3 and 4, the position being that of Figure 3 except that the clamping member is released or thrown upward.

Figure 6 is a sectional elevation through a clamping device designed for use in connection with a bolt which extends into and is supported by the surface against which the clamping is to be done.

Figure 7 shows in perspective the clamping lever constructed as is shown in Figure 6.

Serial No. 509,156.

One of the principal applications of my invention is for the purpose of holding down covers to containers of various kinds which it may be necessary or desirable to frequently remove, and replace. Another of the purposes for which the device is especially adapted is for clamping and holding such articles as the yoke-shaped plate which is commonly employed as a terminal for electric wires. There are many purposes to which the device is applicable and I do not desire to limit it to any particular use to which it is adapted.

In Figures 1 and 2 the device is shown as applied to a bolt which projects upward and is supported from a surface of the body against which it is desired to clamp any object. As shown in these two figures the object being held is indicated as the terminal of an electric wire. The particular object being held is, however, immaterial. The bolt 1 is shown as screwed into and sup ported by a base surface or body 10. For the purpose of regulating the exact height or projection of the bolt a locknut- 11 is shown by the use of which the bolt may be fixed in any adjusted position.

The locking member consists of a lever 2 which is provided with two wings or plates 20 separated sufliciently to embrace the stem of the bolt. Upon the bolt beneath the head 12 is placed a collar or. ring 3 which is free to turn upon the bolt. The clamping arm or lever 2 is pivoted upon the collar 3 by pivot pins 21. The lower edges 22 of the wings 20 are so shaped as to form cam surfaces. These surfaces are so disposed that when the lever is down or in holding position as it has been shown in Figure 1, the line of contact between the pivot 21 and the point of engagement with the member 1 which is being held down, is not towards that side of the central or axial plane of the bolt which lies toward the handle 2, but preferably slightly to the other side so that there will be no tendency for the lever to be thrown upward or into released position by the pressure applied. The action desired is equivalent to that secured in toggle joint levers which have been thrown so that their central pivot has passed the dead center.

In connection with a device of this sort it is desirable to have a slightly resilient action such that the parts may give a little in throwing the lever down into locked position and yet so that it will hold securely. In

the construction shown in Figures 1 and 2 this has been secured by the use of a split or spring washer 5 interposed between the collar 3 and the head 12.

Figures 3 and a show a modified construe tion. In this the lever consists of a mem ber 23 which has two arms lying one at each side of the bolt, these being connected towards one end by a central band 24. This lever is pivoted at 21 to a nut 80 which is adjustable upon the bolt 1. This lever is provided with a .resilient or spring; extension 25 which engages with the object which is to be held. down.

In the type ot construction shown. in Figures 3 and 4; the bolt 1' is supported from some point outside of or above the surface of the body 10 against which the clamping is to be done. in this case the resilient extension may be continuous "from side to side and swing under the end of the bolt. In the construction shown in Figure 6 in which the device is mounted upon a bolt support-ed from the surface 10 against which the clamping is to be done. the platev 25 which forms this resilient extension must be provided with a. slot as 26, which leaves two side strips 27 one at each side of the bolt for engagement with the body which is to be clamped down.

Vith a device of this character the object being held is released by simply throwing down the clamping lever and secured by throwing up the lever. It thus enables devices which are held down in this manner to be quickly secured and released. \Vhere such device requires a number oi holding down bolts the time saved will amount to considerable.

What I claim as my invention is:

1. A quick acting bolt clamping device comprising a lever having wings pivoted at opposite sides of a bolt and a spring; plate h mine; a U-shaped bend with its ends secured to said lever to form an extension thereof adapted to form the clamping; surface the arms of said U-shaped member being: in planes which are substantially parallel with the pivot axis of the lever and at each side of the axis of the bolt.

2. A quick acting clamping device for bolts con'iprising' a nut threaded upon the bolt, a lever pivoted upon said nut and having a resilient extension adapted to engage the object to be held, said parts being connected to hold the extension in alineinent with the bolt when thrown into clamping position.

3. A quick acting bolt clamping device comprising a lever having wings pivoted at opposite sides of the bolt. and a resilient extension from one end of said lever adapted to engage the object to be held when the lever is alined with the bolt.

Signed at Seattle, King; County, ashington, this 15th day of October, 1921.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6855012 *May 28, 2003Feb 15, 2005Samsung Electronics Co., Ltd.High capacity electrical terminal connection
US20040005823 *May 28, 2003Jan 8, 2004Hyeon-Su AnHigh capacity electrical terminal connection
U.S. Classification439/864, 269/93
International ClassificationH01R4/48
Cooperative ClassificationH01R4/489
European ClassificationH01R4/48Q