US788040A - Adjustable biplane miter-box. - Google Patents

Description

No. 788,040. PATENTED APR. 25, 1905. C. V. FRIEND. ADJUSTABLE BIPLANE MITEB. BOX.

APPLICATION FILED F313. 6, 1904.

3 SHEETS-SHEBT 1.

No. 788,040. PATENTED' APR. 25, 1905. G. V. FRIEND. ADJUSTABLE BIPLANE MITER BOX.

APPLICATION FILED FEB. 6. 1904.

3 BHEETSSHBBT 2.

No. 788,040. PATENTED APR. 25, 1905. G. V. FRIEND.

ADJUSTABLE BIPLANE MITER BOX.

APPLICATION FILED F1116, 1904.

3 SHEETS-$111137. 3.

UNTTED STATES Patented April 25, 1905.

ATENT CALVIN V. FRIEND, OF ALTONA, ILLINOIS, ASSIGNOR OF ONE-HALF TO JOHN M. MoKIE, OF ALTOYA, ILLINOIS.

ADJUSTABLE BIPLANE MITEFl-BOX.

SPECIFICATION forming part Of Letters Pa n O- 788,040, dated April 25, 1905.

Application filed February 6,1904. Serial No. 192,447.

To ///Z 117mm if 7II/II/II/ mule/W11..-

Be it known thatI, OA LvIN V. FRIEND, a citi- '/.en of the United States, residing at Altona, in the county of Knox antlState of Illinois, have In addition 5 the table. These thumb-screws are for the purpose of clamping the back sections and 55 holding them to their adjustment. At the same time they cooperate with the screws C in conlining the back sections to a strictly rectilinear movement.

invented certain new and usefulImprovements in 'ljustal le Biplane Miter-Boxes, of which 1 the following is a specification.

The present invention relates to that class of miter-boxes in which the saw-guide is capable of adjustment in two planes, one for prmlucing a miter cut and the other for pro- At equal distances upon opposite sides of 60 ducing a bevel cut. 1 the transverse center of the table lugs E are The object of the invention, broadly stated, secured to its under side. These lugs are peris to provide an improved miter-box of this forated for the passage of a pivot F, to which class. a leg or support (i is secured, so that it may To this end theinvention consists in the feabe placed in the position shown by full lines 5 tures of novelty that are hereinafter described or swung to a position beneath and in contact with reference to the accompanyingdrawings, with the under side of the table or placed in which are made a part hereof, and in which any desired intermediate position, such as in- Figure 1 is a perspective view of a miterl, dicated by dotted lines in Fig. 5, and there box embodying the invention. Fig. 2 is a secured by a screw f, which passes through 7 rear elevation thereof. In Figs. 1 and 2 the a threaded opening in one of the lugs and smwguide is shown as occupying a position engages the pivot. This log or support perpendicular and at right angles to the base has the double function of supporting the or work-table. Fig. 3 is a rear elevation of table at the point where it is subjected to the the improved miter-box with the saw-guide greatest strain and of providing a support for 75 inclined and at an oblique angle to the base a block II, which has a socket for receiving or worletable. Fig. I is a perspective view the stem I of the slotted saw-guide J. The of the saw-guide. Fig. 5 is a vertical transblock H is secured to the legorsupport G by verse section on the line 5 5, Fig. 2. Fig. 6 means of a threaded pin or pivot K and a is a plan view. Figs. 7 andSare respectively thumb-nut L, mounted thereon so that the a rear elevation and a plan view of the block block may be moved in the vertical plane or socket by which the saw-guide is carried. about the said pin, and thereby bring the sawrepresents the horizontal base or workguide to any desired angular position with table, which is supported at its ends by suite relation to the top of the table. \Vhen brought able legs A. j to the desired position, it may be there held 5 B is the back of the box. It is preferby tightening the thumb-nut, and its angle ably formed in two parts, which are adjustwith relation thereto will be shown by a able endwise relatively to each other, so that pointer 71, arranged to sweep a protractor g,

4 they may be placed in the positions shown in 1 carried by the leg or support (i. It is this Fig. I or in the positions indicated by dotted adjustment of the saw-guide that causes the 9 lines in Fig. (5 or in any intermediate posibevel cut. IVhen thus adjusted, it is necestions. Each part is provided with a longitusary to separate the inner ends of the back dinal slot 7/, through which pass the stems of sections, as shown in Fig. 3.

screws (.7, said screws being tapped into the The stem I of thesaw-guide is adjustable rear edge of the table. It is the intention about its axis in the socket in the block H that these screws shall be set up tight enough and may be moved to the extreme positions to prevent any lateral movement of the secindicated by dotted lines in Fig. 6 or to any intermediate position. When adjusted to the tions of the back, while at the same time they I desired position, it may be there held by asetl screw M. It is this adjustment of the sawguide that produces the miter cut. The angle of the saw with relation to the back of the box is indicated on a protractor N on the top of the block, the saw in this case serving as a pointer.

When not in use, the saw-guide may be removed and the leg or support G folded under the table, so that none of the parts will project beyond the back of the box.

What I claim as new, and desire to secure by Letters Patent, is

1. In a device of the class described, the combination with a work-supporting table having back and suitable supporting-legs, of an intermediate support arranged at the back of the table and secured thereto -pivotally so as to be movable in a vertical plane perpendicular to the table whereby it may be folded under the table,a saw-guide, and means whereby said saw-guide is adjustably secured to said support, substantially as described.

2. In a device of the class described, the combination with a table having a back, of a support arranged at the back of the table, means pivotally supporting said support whereby it may move in a vertical plane perpendicular to the table, a block pivotally connected to said support, the pivotal axis of said block being perpendicular to the pivotal axis of the support and a saw-guide carried by said block, substantially as described.

3. In a device of the class described, the

combination with a table having a back, of a support located at the back of the table, means pivotally connecting said support to the table, the pivotal axis being parallel with the table, a block, means pivotally connecting said block to said support, the pivotal axis of the block being perpendicular to the pivotal axis of the support, asaW-guide mounted upon said block, the pivotal axis of the saw-guide being perpendicular to the pivotal axis of the block, and means for holding the several parts to their adjustment, substantially as described.

4. In a device of the class described, the combination with a table, of a support located at one side of the table, a block, means pivotally connecting said block to said support with its pivotal axis horizontal and transverse to the table, a protractor for showing the inclination of said block, said block having a vertical socket which is perpendicular to its pivotal axis, a saw-guide having a stem occupying said socket, and a protractor on the block in operative relation to the saw-guide, substantially as described.

5.. In a device of the class described, the combination with the'table and supportinglegs, of an intermediate support, means pivotally connecting it to the table, at the rear side thereof, means carried by said support for carrying the saw-guide, a saw-guide and means for removably attaching it to said carrying means, substantially as described.

CALVIN V. FRIEND. itnesses:

H. E. OLsoN, F. W. GRANVILLE.

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