US2365935A - Clamp - Google Patents

Description

B. A. BOGGS Dec. 26, 1944.

CLAMP Filed Jan. 21, 1944 2 Sheets-Sheet 1 w t n m m I Dec. 26, 1944. B A Boss's 2,365,935

CLAMP Filed Jan. 21, 1944 2 Sheets-Sheet 2 Inventor BEE YL 1 7 509 6 B] 2mm WWW A Home];

Patented Dec. 2 6, 1944 UNITED STATES PATENT OFFICE CLAMP Beryl A. Boggs, Portsmouth, Va.

Application January 21, 1344, Serial No. 519,234 3 Claims. (Cl. 248-229) The present invention relates to new and useful improvements in clamps, particularly for surface gauges, although it will be understood, of course, that the device may be used for any other purpose for which it ma be found adapted.

The primaryobject of the invention is to provide, in a manner as hereinafter set forth, a clamp of the character described comprising a novel construction and arrangement, whereby two or more members, such, for example, as the spindle and the scriber of a surface gauge may acter which embodies a unique combination and arrangement of jaws for gripping the members.

Other objects of the invention are to provide a clamp of the character set forth which will be comparatively simple in construction, strong, durable, highly efficient and reliable in use, compact and which may be manufactured at low cost.

All of the foregoing, and still further objects and advantages of the invention, will become apparent from a study of the following specification, taken in connection with the accompanying drawings, wherein like characters of reference designate corresponding parts throughout the several views, and wherein:

Figure 1 is a plan view of a clamp constructed in accordance with the present invention.

Figure 2 is a view in horizontal section through the device.

Figure 3 is an end elevational ,view, showing the clamp in use.

Figure 4 is a. plan view of another form of the device.

Figure 5 is a view in horizontal section through I to Figures 1, 2 and 3 thereof in particular, it will be seen that reference character I designates a tubular casing of suitable dimensions and mate rial. The casing i has formed therein at an intermediate point diametrically opposite open- 5 ings 2. The openings 2 are slightly elongated longitudinally. In the use of the device which has been illustrated, the openings 2 accommodate the spindle 3 of a gauge which is designated generally by reference character 4.

In one end portion, the tubular casing l is provided with an intumed, integral flange 5 which is formed to provide a substantially conical seat 6. Threadedly mounted in the other end portion of the casing I is a. plug 1.

Opposed complemental jaws 8 and 9 are slidably mounted in the casing l for the reception of the spindle 3 therebetween. The jaws 8 and 9 comprise substantially semi-circular faces It) for engagement with the spindle 3. A thumb screw 1 l is threadedly mounted in the plug 1 and engaged with the jaw 8 for pressing same against the spindle 3. L

Mounted in 'one end portion of the casing l and projecting longitudinally therefrom is a clamping member H for the scriber I3 of the instrument 4. The member I2 has formed therein a transverse opening I4 for the reception of the scriber I 3y Extending longitudinally into the member I 2 from the inner end thereof is a bore l5 which communicates with the opening M. A jaw I6 is slidablymounted in the bore 15 for coaction with the member I2 for frictionally securing the scriber l3 in adjusted position. Projecting longitudinally from the jaw 9 is a lug or the like I! which is slidable in the bore l5 and engaged with the jaw I6 for pressing said jaw l6 against the scriber [3.

It is thought that the manner in which the device is used will be readily apparent froma consideration of the foregoing. Briefly, the spindle 3 is inserted through the longitudinally elongated openings 2, said spindle passing between the jaws 8 and 9, and the scriber I3 is inserted in the opening I! of the member l2. When the desired adjustments have been made, the thumb screw II is tightened. When this occurs, the spindle 3 is firmly clamped between the jaws 8 and 9 in the elongated openings 2 and the scriber I3 is secured in the member l2 by the jaw l6. That is, the thumb screw ll presses the jaw 8 against the spindle 3 which, in turn, is pressed against the jaw 9. Then, the element l'l forces the jaw "5 against the scriber I: which is pressed 55 against the outer portion of the wall of the opening ll. .0! course, to adjust or remove the members 3 and I3, it is only necessary to back the thumb screw ll off slightly.

In the embodiment illustrated in Figures 4 to 11, inclusive, of the drawings, reference character l8 designates generally a tubular casing of suitable dimensions and material. The casing I8 is closed at one end, as at l9. Threadedly mounted in the other end portion of the casing I8 is a plug 20. Diametrically opposite openings 2| are provided at an intermediate point in the casing l8. The openings 2| are slightly elongated longitudinally. The openings 2| are for the reception of the spindle of a surface gauge or any other member to be secured.

Opposed coacting jaws 22 and 23 are slidably mounted in the tubular casing Ill. The jaws 22 and 23 are adapted to receive therebetween and frictionally grip the aforementioned spindle or other member. The jaws 22 and 23 include substantially semi-circular faces 24 having grooves 25 therein. The grooves 25 are for the reception of a substantially C-shaped spring 26 which yieldingly urges the jaws 22 and 23 open.

slidably mounted in the cap 20 and projecting longitudinally therethrough is a clamping member 21 for the scriber of a surface gauge or for any other member to be held. The member 21 has formed therein a transverse opening 28 for the reception of the aforementioned scriber. Extending longitudinally into the member 21 from the inner end thereof is a bore 29 which communicates with the opening 28. The bore 29 accommodates a jaw 30 on the jaw 23 for frictionally clamping the scriber in .the member 2'1. The member 21 is provided, on its inner end, with a stop flange or shoulder 3| which is engageable in the plug 20.

Threadedly mounted in the closed end IQ of the tubular casing I8 is a thumb screw 32. The thumb screw 32 is engaged with the jaw 22 for pressing said jaw 22 against the spindle or other member to be held.

In use, when the thumb screw 32 is backed off, the jaws 22 and 23 are spread or opened by the spring 26. This facilitates insertion of the spindle in the openings 2|, said spindle passing between the jaws 22 and 23, said spindle also passing through the spring 26. The scriber is then inserted in the opening 28 and the desired adiustments are made. The thumb screw 32 is then tightened for clamping the spindle between the jaws 22 and 23 and for clamping the scriber in the member 21 through the medium of the jaw 30.

It is believed that the many advantages of a clamp constructed in accordance with the present invention will be readily understood, and although preferred embodiments of the device are as illustrated and described, it is to be understood that other modifications and changes in the details of construction may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:

l. A clamp of the character described comprising an elongated casing having openings therein for the passage of an article to be held, a pair of jaws in the casing for receiving the article therebetween and engageable therewith, means for closing the jaws on the article, a member mounted in the casing and projecting therefrom, said member having an opening therein for the passage of another article to be held, said member further having a bore therein communicating with the casing and with the second-named opening, and means in the bore operabl by one of the jaws for securing the second-named article in the opening of said member.

2. A clamp of the character described comprising a tubular casing, a clamping member mounted in one end portion of the casing and projecting longitudinally therefrom, the casing having aligned openings therein at an intermediate point for the reception of an article to be held, opposed coacting jaws in the casing for receiving the article therebetween and for frictionally gripping same, means for closing the jaws on the article, the member having an opening therein for the passage of another article to be held, said member further having a bore formed longitudinally therein communicating with the casing and with the second-named opening, a jaw slidable in the bore and engageable with the second-named article for retaining same in the member, and a lug on one of the first-named jaws operable in the bore and engageable with the second-named jaw for engaging same with the second-named article.

3. A clamp of the character described comprising a tubular casing, a plug threadedly mounted in one end portion of the casing, said casing having aligned openings therein at an intermediate point for the passage of an article to be held, opposed coactin jaws slidably mounted in the casing for receiving and gripping the article therebetween, said jaws including opposed faces having grooves therein, an opening spring for the jaws engaged in the grooves, a thumb screw threadedly mounted in the other end portion of the casing for closing the jaws, a clamping member slidably mounted in the plug and projecting longitudinally therefrom, said member having an opening therein for the passage of another article to be held and further having a longitudinal bore therein communicating with the casing and with the second-named opening, and a jaw on one of the first-named jaws slidable in the bore and engageable with the secondnamed article in the second-named opening for securing said second-named article in the member.

BERYL A. BOGGS.

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