US3072396A - Adjustable jigs for holding elongated parts in predetermined angular positions - Google Patents

Description

Jan. 8, 1963 A. D MCBURNEY 3,072,396 ADJUSTABLE JIGS FOR HOLDING ELONGATED PARTS IN PREDETERMINED ANGULAR' POSITIONS Filed March 17, 1959 2 Sheets-Sheet 1 INVENTOR.

Hum D. M CBURNE) 2M MM Jan. 8, 1963' A. D. M BURNEY 3,072,39

ADJUSTABLE JIGS FOR HOLDING ELONGATED PARTS IN PREDETERMINED ANGULAR POSITIONS Filed March 17, 1959 2 Sheets-Sheet 2 25 23 24 INVENTOR.

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PATENT Aaaur United States Patent Ofifice 3,072,396 Patented Jan. 8, 1963 3,072,396 ADJUSTABLE JIGS FOR HOLDING ELONGATED IN PREDETERMINED ANGULAR POSI- Alvin Dan- McBurney, Los Angeles, Calif. (5908 Hollywood Blvd., Hollywood 28, Calif.) Filed Mar. 17, 1959, Ser. No. 800,031 3 Claims. (Cl. 269-45) The invention herein described pertains to jigs and more particularly to a jig for holding two pieces of molding, picture frame or other elongated objects in predetermined angular positions for such purposes as nailing, gluing or otherwise affixing them together, or for splicing at various angles.

One object of my invention is to provide two vises that may be adjusted at a predetermined angle with respect to each other for such uses as holding two members in fixed relationship to each other for nailing, gluing, dowling or splicing.

Another object is to provide a connected pair of vises of such structure that a plurality of such pairs can be used in combination for holding pieces of molding or picture frame in position for gluing or nailing in order to construct frames having various configurations and any number of sides.

Another object is to provide easily operable means for adjusting the vises of such a jig at any of the more commonly used angles as well as such other angles as may be desired.

A further object is to provide a device of the class described having such a simple structure that it may be manufactured and sold at a very low price.

An additional object is to provide an adjustable saw guide in combination with the aforementioned pair of vises in order to form the equivalent of a mitre box.

Another object is to make the saw guide so adjustable with respect to either of the two vises that objects may be placed in the vises and clamped therein for sawing them at any desired angle for mitered joints or for splicmg.

Still an additional object is to provide a construction for the two vise and saw guide combination that will permit pieces of molding or other elongated objects placed there in to be sawed through without the saw teeth encountering metal.

Other objects will appear as the specification proceeds.

In the drawings:

FIG. 1 is a plan view of one form of my device showing two vises disposed at an angle with respect to each other.

FIG. 2 is a section taken on line 2-2 of FIG. 1.

FIG. 3 is a bottom view of the device of FIGS. 1 and 2.

FIG. 4 is a section taken on line 44 of FIG. 1.

FIG. 5 is a plan view of an embodiment of my invention that includes a saw guide in combination with the pair of vises.

FIG. 6 is a bottom view of the device of FIG. 5.

FIG. 7 is a section taken on line 7-7 of FIG. 5.

FIG. 8 is a section taken on line 88 of FIG. 5.

FIG. 9 is a section taken on line 9-9 of FIG. 5.

FIG. 10 is a fragmentary top view of member 21 of FIG. 8.

And FIG. 11 is a fragmentary bottom view of member 23 of FIG. 8 rotated 180 degrees in a plane perpendicular to the paper.

Vise 1, shown in the various figures, is rigidly attached to a supporting member 2. This vise includes a stationary jaw 3 and a movable jaw 4 that is movable toward or away from the stationary jaw 3 by means of a rotatably mounted screw 5 in threaded engagement with the jaw 4. Opposite ends of screw 5 are journaled respectively in the lower part of the stationary jaw 1 and the end portion 6 of the vise assembly. This end portion is parallel to the jaws and is supported by two tie bars 7 and 8 disposed at right angles thereto. These tie bars flare out to form the base 9 of the vise. The stationary jaw 3 is integral with the base, which is attached to, or integral with, the supporting member 2. A second vise 10, having a structure similar to the first vise 1, is pivoted to the supporting member 2 at point 11. The axis around which the second vise is pivoted, as shown in the figures, lies in the planes of the front, or inside, surfaces of the stationary jaws of both vises. In order to provide the required pivotal action, the base 12 of vise 10 is extended outward beyond the stationary jaw to form a circular structure of somewhat less than 270 in angular extent. The surface 14 of the boss or knob 13 is on a lower level than the base 12 of the vise 10, as will be seen in FIG. 2. In other words, the plane of surface 14 is lower than the plane of base 12.

The base 9 of vise 1 and the base 12 of vise 10 are substantially in the same plane, which means that the surface 14 of the boss or knob 13 is lower than base 9, as well as lower than base 12. Some of the purposes of this construction will appear as the specification proceeds.

The supporting member 2 is provided with an arcuate slot 15 extending therethrough. This slot is concentric with the pivot 11.

Boss 13 is part of the substructure of vise 10. This substructure is provided with a second protruberance 16. A screw 17 passes through'the protruberance 16 and also through the slot 15. As will be seen in FIG. 3, the underside of base 2 has an arcuate groove 18 therein. The arcuate slot 15 is centrally disposed in the arcuate groove 18. The sides of the groove are spaced so that a nut 19 will nest in the groove and be held against rotation by the sides of the groove. With this construction, it is possible to loosen the screw 17 and then to move the second vise 10 angularly around the pivot point 11 in order to dispose the second vise 10 at any desired angle with respect to the first vise 1. During such rotation, the screw 17 will of course move in the arcuate slot 15 and the nut 19 will travel in the groove 18.

The protuberance 16 on the substructure of vise 10 is provided with a pointed index 20 that may be aligned with numbers disposed near the periphery of the circular base 2. These numbers may indicate some of the more commonly used angles. The vise is so constructed that when the index 20 is aligned with the line indicating 60, the jaws of vise 10 will be disposed at 60 with respect to the jaws of vise 1. Similar angular relationships prevail between the two vises when the index 20 is aligned with any of the other numbers. It is of course possible to select angles other than those indicated by numbers on the base 2. The vise 10 may be fixed in any desired angular position merely by tightening the screw 17. The nut 19, of course, is constrained against rotation. When the screw 17 is tightened, it thus clamps the substructure of vise 10 and the base 2 between the head of the screw and the nut 19.

The figures on the second page of the drawing-that is, FIGS. 5 to 10, inclusive-show the addition of a saw guide to the device pictured in FIGS. 1 to 4, inclusive. The saw guide is angularly adjustable with respect to either vise 1 or 10. This saw guide may be used in conjunction with the two vises to form the equivalent of a mitre box. Unlike a mitre box, however, the device of FIGS. 5 to 10, inclusive, permits two elongated objects or pieces of molding to be cut off at difierent angles simultaneously.

The saw guide is composed of two parts: part 21, which has an integral base 22, and part 23 which is adjustable on the base 22 of member 21 in order to accommodate saws of different thicknesses. The underside of member 23 is provided with a tongue 24 that cooperates with a keyway 25 in the base 22 so that member 23 will move in a straight line and thus maintain the inner faces of members 21 and 23 parallel to each other regardless of the spacing between them. The screw 26 permits the jaw 23 to be tightened in a fixed position with respect to the jaw or member 21.

The underside of the base 22 is provided with arcuate tongues 27 and 28 that are slidable in the slot 15 as will be seen in FIG. 6. The edge 29, FIG. 5, of the base 22 is arcuately formed, the are being concentric with the circular circumference of the boss 13.

The construction just described permits the saw guide to be rotated angularly around the boss 13. The saw guide may be fixed in many desired angular positions merely by tightening the screw 30 which cooperates with the nut 31 in the same manner that the previously described screw 17 cooperates with the nut 19. Nut 31, like nut 19, nests in the groove 18 and is kept from rotating by the walls of this groove.

It will be observed in FIG. 7 that the upper surface 32 of member 21 is in a lower plane than the surface 12 of vise 10. Surface 12, it will be remembered, is at substantially the same level as the surface 9 of vise 1. When parts are held between the jaws of either vise for sawing by means of a saw moving in the saw guide formed by members 21 and 23, the clamped parts will rest on the surface 9 or 12, and since the top surface of boss 13 and the surface 32 are both at lower levels, the saw can cut through the parts held in the vise or Vises without the saw teeth touching the metal surfaces 32 or 14.

Various modifications, substitutions and transpositions may be made in the elements of the appended claims without departing from the broad spirit of the invention.

My claims are:

1. In a jig for holding two elongated objects in fixed positions with respect to each other, a combination including: a first vise; a supporting member attached to said first vise; a second vise rotatably supported on said member; and a saw-guiding device having a slot therein for receiving and guiding a saw; and means for so rotatably supporting said device on said member that said slot will align with the axis of rotation of said second vise regardless of the relative angular position of said device and member, said means comprising an arcuate recess in said member concentric with said axis of rotation, and guiding means integral with said device protruding from the underside thereof and extending into said recess, said guiding means having at least two mutually angularly spaced portions disposed at equal distances from said axis.

4- 2. In a jig for holding two elongated objects in fixed positions with respect to each other, a combination including: a first vise having a stationary jaw and a movable jaw; a supporting member attached to said first vise; a second vise having a base structure rotatably mounted on said member for angular movement on an axis lying in the same plane as the inside surface of the stationary jaw of said first vise, said second vise also having a stationary jaw in a movable jaw, the stationary jaw of said second vise so disposed with respect to the base structure of said second vise that a plane coincident with the inside surface of the stationary jaw of said second vise will pass through said axis.

3. In a jig for holding two elongated objects in fixed positions with respect to each other, a combination including: a first vise comprising a stationary jaw, a movable jaw and a base having an upper surface substantially normal to the gripping surfaces of said jaws; a supporting ember attached to said base; a second vise comprising a stationary jaw, a movable jaw, and a base rotatably mounted on said supporting member, the upper surfaces of the bases of said first and second vises being at substantially the same level, the base of the second vise having a laterally projecting boss through which its axis of rotation extends, and the upper surface of said boss being at a lower level than the upper surfaces of said bases; a saw-guiding device having a slot therein for receiving and guiding a saw; and means for so rotatably supporting said device on said supporting member that said slot will substantially align with said axis of rotation regardless of the devices angular position with respect to said supporting member, the portion of said device beneath said slot lying in a lower plane than the top surfaces of said bases, said means comprising an arcuate recess in said supporting member concentric with said axis of rotation, and guiding means integral with said device protruding from the underside thereof and extending into said recess, said guiding means having at least two mutually angularly spaced portions disposed at equal distances from said axis.

References Cited in the file of this patent UNITED STATES PATENTS 565,652 Walter et al. Aug. 11, 1896 770,834 Traut Sept. 27, 1904 937,946 Lithander Oct. 26, 1909 1,159,199 Erman Nov. 2, 1915 1,417,973 Cary May 30, 1922 2,936,803 Jorick May 17, 1960 FOREIGN PATENTS 305,803 Great Britain Feb. 14, 1929 132,668 Australia June 2, 1949

Claims (1)

1. IN A JIG FOR HOLDING TWO ELONGATED OBJECTS IN FIXED POSITIONS WITH RESPECT TO EACH OTHER, A COMBINATION INCLUDING: A FIRST VISE; A SUPPORTING MEMBER ATTACHED TO SAID FIRST VISE; A SECOND VISE ROTATABLY SUPPORTED ON SAID MEMBER; AND A SAW-GUIDING DEVICE HAVING A SLOT THEREIN FOR RECEIVING AND GUIDING A SAW; AND MEANS FOR SO ROTATABLY SUPPORTING SAID DEVICE ON SAID MEMBER THAT SAID SLOT WILL ALIGN WITH THE AXIS OF ROTATION OF SAID SECOND VISE REGARDLESS OF THE RELATIVE ANGULAR POSITION OF SAID DEVICE AND MEMBER, SAID MEANS COMPRISING AN ARCUATE RECESS IN SAID MEMBER CONCENTRIC WITH SAID AXIS OF ROTATION, AND GUIDING MEANS INTEGRAL WITH SAID DEVICE PROTRUDING FROM THE UNDERSIDE THEREOF AND EXTENDING INTO SAID RECESS, SAID GUIDING MEANS HAVING AT LEAST TWO MUTUALLY ANGULARLY SPACED PORTIONS DISPOSED AT EQUAL DISTANCES FROM SAID AXIS.

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