US94592A - Improvement in sa - Google Patents

Description

2 Sheets-Sheet 1.

VP. GBISBR.

SAWING MACHINE.

No. 94,592. Patented Sept. '7, 1869.V

2 Sheets-Sheet 2.

P. GBISER. SAWING MACHINE.

No. 94,592. Patented Sept. 7, 1869.

7792122 esse; In me niza z' unina @sans @sind dtiijiiw.

Tletters Patent No. 94,592, dated 'September 7, 1869.

IMPROVEMENT IN SAWING-MACHINE.

iIhe Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known 4that I, PETER Gruslin, ot"\\aynesbor ongh, in the county ot' Franklin, and State ot' Pennsylvania, haveinvented a new andl useful Improvement for Gauges and Saw-Tables; and I do hereby declare that the following is a full, clear, and exact description of the same, reference beinghad to the annexed drawings. making part of this specication, in which- Figure 1 is a plan of a gauge;

Figure 2 is a vertical section ofthe same;

Figure 3 is a section of the oscillating and extension arms; p

Figurell isa section of one of the adjustable prickpoints;

Figure 5 is an elevation of an'V adjustable saw-table.

Figure 6 is a section ofthe same;

Figure 7'is an elevation, showing the mechanism for adjusting the hinged leaf of the table;

Figure 8 isa plan ot' a gauge, adapted for a flat table Figure 9 is a section of the extension-arm of the same, in line a: x, fig. 8;

Figure 10 is a plan ot'aigauge, adapted for cutting above the saw; and

Figure 11 is an elevation. of th'e same.

The4 same letters in all the figures indicate indcntical parts.

" VMy improvement relates to tables for circular saws, 4and to gauges for the same, by means of which the boards may be cut to lengths, bevelled and cross-cnt at regulated intervals, at one handling'of the board.

In the annexed drawings- I 'A is the top of the table, hinged at 4one end to the frame B, and to which is attached a hinged leaf, A', the saw being placed in the crack between the two leaves. The distance to which the teeth may be made to project above thc table is regulated by the following mechanism:

The loose end of the top A rests upon a frame, C, sliding in vertical grooves'in the legs ofthe table. lhe crank-rod D is attached by journal-boxes to the frame (l, and its lower end has cut upon it the thread of a screw, which passes through a nut in the cross-brace B ofv the table-trame B. By turning the crank, the end-ef the top A may be raised or depressed, as desired.

The hinged leaf A' is supported at its outer edge upon the rack-bars E E, hinged thereto. The rackbars-are operated by the "pinious E, upon the shaft E, turning upon journals in boxes upon the main frame.

A `notched ratchet-plate, E2, is attached to the frame, the shaft E4 passing through it; the spring lever E3 is fastened to the end of the shaft E4, and it may be used to turn the shaft, by releasing the lever from the notches in the plate E". lVhen the leve'r is released, the tension of the spring will engage it with one of' the notches, and hold the table-leaf A' at any desired angle.

The gauge shown in gs. 1, 2, 3, and 4, 'is particularly adapted for use in connection with thc hinged table-leaf. It is attached to a frame, having a triangular transverse section, as clearly shown in fig. 2, so that the upper surface may set close to the saw, and its edge be at the same level with the top A of the table. It isattached to the leaf A by a tongue, f, fitting into aflongit-udinal groove, a, across the face of the leaf A', in such manner that its position may be adjusted, as desired.

G is an oscillating arm, pivoted to thc frame F, and having an index arm, G1, swinging in a segmental slot, through which passes a clamping-screw; This segment may beigradnated, as shown'iu fig. 1.

On the oscillating arm G is an extension-arm, G, slotted longitudinally, and attached to a groove in the form of an inverted T, in the arm G, as shown in iig. 3, by a clamping-screw, Gi.

On the extension-ann `are two swinging stops y, which serve to gauge the length of the pieces to be sawed into certain lengths. `\Vhcn the stop on the' outer end of the arm G3 is used, the other may be turned on its pivot, so as to be out of the way. By means of the oscillating arm used as -a gauge, the pieces may be cut to a certain length, either sanare upon the ends or at any requisite bevel.

H H are segmental slots, to receive the adjustable spring prick-points H1, the elasticity of which permits them to be pressed by the pressure of the piece to be cut below the si'irfaee of the table, so as not to intel'- fere with the proper disposition of the piece to besawed.

The gauge I is intended for use with the oscillating arm G. By removing the 'extension-arm G, and attaching it by the clamp-screw i, and by a screw passing through the eye i, the arch in thc gauge passes over the saw. This gauge is especially designed for use in cutting kerfs part way through a board, at regular distances, for dovetailing or cutting gains or slots.

The adjustable spring-points i2 must be so set that they may, when they enter one kcif, form a guide to determine where another is to be ont. When coming in contact with the plain surface of the board, they will yield to its pressure, so that by using 'as many of the spring-points as may he needed, and by reversing on the boards, a series of kerts may be cnt at regulated distances. In cutting such keri's, the table A must be raised, so that the teeth of the saw will pass only part way through the board. The oscillation of the lever G will permit the arched gauge to be set an anyrequired angle. In fig. 8 I have shown a gauge adapted for use upon a table wherc the top is flat. p

K is the frame, having on the under side a cleatl slidingin a groove in the top of the table, so that the -gaugeimay be moved as required.

L is an oscillating arm,'tnrning on a stud-pin passing through a slot, as shown atl. The slotted brace YLl is pivotedjo the arm L, and through the slot passes 'a 'guiding stud pin. This arrangement allows the guide to be shifted, so as to cut the end of the board d square, o1` to cut a bevel either entirely across or partly across the end of the board, according to the required form. l

On the sliding extension-arm L2, attached to the arm` L by a slot and clamping-screw, is an oscillating stop, L, which may be used when the boards are to be cut to a given length, or turned to the opposite side, to be out of the way of the board.

. M is an oscillating adjustable arm, turning upon a stud-pin, m., attached to the frame K, passing through a -lon gitudinal slot, and secured by a clampingAscrew passcrank D, for elevating one end of the top, the hinged leafI A', and the mechanism for adjusting it, substantially as set forth.

3. The frame F, for supporting the gauge, when constructed in the form of a triangle, and used in cornbination with a hinged leaf, substantially as set forth.

4. The combination ofthe oscillating arm G, brace G', extension-arm G, and hinged stops g, with the slotted i'ame F, substantially as set forth. v

5. The frame F, cbnstructed with concentric segmental slots H, in combination with elastic ,spring prick-points H1, arranged to operate substantially as set forth.

6. In combination with the oscillating arm G, the arched guide I, constructed and arranged substantially as set forth.

7 In combination with the frame Kt he oscillating slotted arm L and slotted brace L1, arranged substantially asand for the purpose set4 forth.

8. The last aboverecited parts K, L, and L, in

combination with the adjustable extension-arm Land' stop Li,- substantially as set forth.

In testimony whereof, I have 'signed my name to this s'pecication, in the witnesses.

Witnesses'.

R. MASON, C. F. OLAUSEN.

PETER GEISER.

presence of two subscribing`

Images