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Publication numberUS1543197 A
Publication typeGrant
Publication dateJun 23, 1925
Filing dateDec 1, 1924
Priority dateDec 1, 1924
Publication numberUS 1543197 A, US 1543197A, US-A-1543197, US1543197 A, US1543197A
InventorsUlrich Christian D
Original AssigneeUlrich Christian D
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Expansible clamp
US 1543197 A
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Description  (OCR text may contain errors)

June '23, 1925. 1,543,197

C. D. ULRICH EXPANS IBLE CLAMP Filed Dec. 1, 1924 Patented June 23,1925.

NITED STATES onnisrmn 1) ULRICH, or Nonrrr'LI-r'rnn noon, ARKANSAS.

EXPANSIBLE CLAMP.

Application filed December 1, 152 1. Serial No. 753,400.

1 all who 12bit may concern:

Be it known that I, CHRISTIAN D. ULnIoH, a citizen of the United States, residing at North Little Rock, in the county of Pulaski and State of Arkansas, have invented new and useful Improvements in Expansible Clamps, of which the following is a speciflea-tion. 7

This invention relates to expansible clamps and the main object of the invention is to provide a clamp which is rigid in constrnction, easy to adjust and which has relatively few parts.

Another object of this invention is to pro vide means for keeping the enpansible bar within the housing when the clamp is out of use.

Another object of the invention is to provide means for threadedly engaging and disengaging the adjusting screw.

Other objects will appear as the disclosure progresses. The drawings are intended merely to indicate a possible embodiment of the invention. It is obvious that the actual needs of manufacture may necessitate certain mechanical changes. It is, therefore, not intended to limit the invention to the embodiment illustrated, but rather, to define such limits in the appended claims.

For a more detailed understanding of the invention, attention is now called to the drawings in which a preferred embodiment is shown illustrated. In these drawings, like parts are designated by like reference characters in all the views.

Figure 1 is a side elevation of the clamp. Figure 2 is a side elevation of the clamp partly in section.

Figure 3 is a section on line 33 of Fig- 40 ure 1.

Figure at is a side elevation partly in section of a. modified form of the clamp.

Figure 5 is a section on line 55 of Fig- H ure 4. Figure 6 is a section on line 6-43 of Figure .1.

Referring now to the drawings in detail, numeral 1 designates the U-shaped housin 2 the movable bar, 3 an arm at right angles, to the movable bar, and 1 the lower jaw. The lower jaw is prevented from leaving the U-shaped housing 2 by a block 5 kept in place by a pin 6 and having a flange- 7 at the lower end. Numeral 8 represents a set screw for adjusting the lower jaw in any desired position.

The outside edge of thebar 2 is provided with a series of notches 9 whichare adapted to engage a pin 10 at the upper end of the U-shaped housing, for the purpose of vertical adjustment of the movable bar 2. Nuineral 11 represents a threaded hole and 12 the adjusting screw. To prevent the lower end of the bar 2 fromvswinging outward when the bar 2 is in the lowest position, holes 13 are provided in the bottom of the U shaped housing and the bar, which register with each other for the insertion of a pin 1 1-.

In Figure is shown a modification of the device with means to threadedly engage and disengage the adjusting screw 15 for the purpose of quick adjustment of same. Numeral 16 designates a threaded element which is normally urged against the threaded screw 15 by a spring 17. To disengage the threaded elements from the adjusting screw, the knob 18 is pulled and revolved through an arc of 180. This will bring the pin 19 out of engagement with the slot 20 and bear against the flatsurface 21 as noted in the drawin Means are provided to prevent the lower end of the bar 22 from swinging outward when the clamp is not in use, and which consist of bent-over portions 23 in the U- shaped housing 2d and lugs 25 at the lower end of the bar 22. As noticed in Figure 5, the slot 26 is somewhat narrower than the distance from the face to face of the lugs 25. This arrangement is for the purpose of snapping the bar 22 in place. To swing the bar in or out of the housing 24, the side walls will be spread apart somewhat to clear the lugs 25, the material of the housing being somewhat resilient.

It is thought from the foregoing description that the advantageous and novel features of my invention will be readily apparent.

What I desire to secure by Letters Patent is:

1. In a device of the class described in combination, a U-shaped housing, a movable bar adapted to fit in the said U-shaped housing, an arm at right angles to the said movable bar, notches at the outer end of the said movable bar, a pin for engaging the' said notches, a lower jaw, means for adj usting the position of the said lower jaw, a block having a flange at the bottom of the U-shaped housin and an adjusting screw in the said arm.

2. In a device of the class described in combination, a U-shaped housing, a movable bar adapted to lit in the said U-shaped housing, an arm at right. angles to the said movable bar, notches at the outer end 01": the said movable bar, a pin for engaging the said notches, lugs at the bottom of the said movable bar, bent inward portions of the said U-shaped housing, the said lugs adapted to spread apart the said bent inward portions when contacting with same, a lower jaw, means for adjusting the postion of the said lower aw, an adjusting screw and means to .threadedly engage and disengage the said adjusting screw.

3. In a device of the class described in combination, a U-shaped housing, a movable bar adapted to fit in the said U-shaped housing, an arm at right angles to the said movable bar, notches at the outer end of the said movable bar, a pin for engaging the said notches, lugs at the bottom of the said movable bar, bent inward portions of the said U-shaped housing, the said lugs adapted to spread apart the said bent inward portions when contacting with same, a lower jaw, means for adjusting the postion of the said lower jaw, an adjusting screw, means to threadedly engage and disengage the said adjusting screw, the said means, including a movable element having a threaded face, a spring for normally urging the said threaded face against the said adjusting screw, a stem, a slot, a disengaging pin adapted to fit in said slot and a knob for pulling and revolving the said engaging and disengaging means. 7

CHRISTIAN D. ULRICH.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2551880 *Jan 5, 1948May 8, 1951Bert T GressleyStraight beam adjustable jaw clamp
US2685310 *Mar 15, 1952Aug 3, 1954Lang Clarence CExtensible clamp
US2876814 *Nov 23, 1955Mar 10, 1959Leister Willard FExtensible c-clamp
US5692734 *Nov 25, 1994Dec 2, 1997American Tool Companies, Inc.Clamp structure
US6098973 *Mar 23, 1998Aug 8, 2000Olympia Industrial, Inc.C-clamp
US6367787Mar 1, 2000Apr 9, 2002American Tool Companies, Inc.Hand clamp
US6412767Mar 6, 1998Jul 2, 2002American Tool Companies, Inc.Clamping jaw
US7699297Jul 25, 2002Apr 20, 2010Irwin Industrial Tool CompanyIncreased and variable force and multi-speed clamps
US7735813Nov 7, 2007Jun 15, 2010Irwin Industrial Tools GmbhClamping or spreading tool
US7815175Oct 30, 2007Oct 19, 2010Irwin Industrial Tool CompanyIncreased and variable force and multi-speed clamps
US8002772 *Aug 8, 2003Aug 23, 2011Kinamed, Inc.Non-imaging tracking tools and method for hip replacement surgery
US8074340Mar 1, 2010Dec 13, 2011Irwin Industrial Tool CompanyIncreased and variable force and multi-speed clamps
US8240647May 5, 2010Aug 14, 2012Irwin Industrial Tools GmbhClamping or spreading tool
US8590871Dec 7, 2009Nov 26, 2013Irwin Industrial Tool CompanyClamping and or spreading tool
US8702076Sep 12, 2011Apr 22, 2014Irwin Industrial Tool Company, Inc.Increased and variable force and multi-speed clamps
Classifications
U.S. Classification269/149, 269/182, 269/211, 269/203, 269/249
International ClassificationB25B5/00, B25B5/10
Cooperative ClassificationB25B5/101
European ClassificationB25B5/10B