US769019A - Shingle-sawing machine. - Google Patents

Description

PATENT'ED AUG. so, 1904.

- V J. L. POSTON.

SHINGLE SAWING MAGHINE.--

.LPPLIOATION FILED NOV. '1, 1903.

2 sEBnTs-sHET 1.

H0 MODEL.

No. 769,019. PATENTEDAUG.30,1901.

J. L; POSTON.

S'HINGLE 'SAWING MACHINE;

APPLIOATION I'ILED K0111903- no MODEL. Mums-sum 2.

- UNITED STATES:

Patented August 30, 1904.

,IAGKSON L. POSTON, OF WIEHLE, VIRGINIA.

.' SHINGLE -SAWI NG MAQHINE.

' SPECIFICATION forming part of Letters Patent No. 769,019, dated. August 30, 1904. Application filed November 7, 1903. Serial No; 180,218. (No model.)

To all whom/it may concern:-

Be it known that I, J oKsoN L.POSTON, a citizen of the United States, residing at Wiehle,

in the county of Fairfax and State of Virginia, I have invented new and useful Improvements in Shingle-Sawing Machines, of which the following is a specification. I

This lnvention relates to shingle-sawing machines, and has for its object to provide in heel, whereby the entire bolt will be utilized without wastethat is to say, one shingle will.

be cut from its thick to its thin end and the next shingle from its thin to its thick end.

It also has for its object to provide automatic mechanism for releasing the sawed shingle to permit it to drop from the machine and suitable uprights 4:. Mounted on the bed are also to provide improved means for automat- :pris'ing a table 19, which is provided with rollers 20, arranged to travel on the rails 6 and ically restoring the gage mechanism to its normal condition when the carriage has been retracted preparatory to sawing another shingle. It has for a further object to provide improved means for adjusting the releasing mechanism in order to release the shingles at diiferent periods during the travel of the car-v riage to adapt the machine to sawing shingles of different lengths.

It also has other objects in View, which will fully hereinafter be made apparent.

To these ends my invention consists in the features and in the construction, combination, and arrangement of parts hereinafter described, and particularly pointed out in the claims following the description, referencebeing had to the accompanying drawings, forming a part of this specification, wherein Figure 1 is a side elevation. Fig. 2 is a top plan view. Fig. 3 is an end elevation. Figs. 4:, 5, 6, and-8 are detail sectional views, and Fig. 7 is a detail view of the gage-block.

The numeral 1 indicates the bed of the machine comprising two longitudinal'side rails 2 and two cross-beams 3 between the ends of theside .rails, said bed being supported on parallel stringers 5, on which are mounted -rails 6' and 7. Fixed to one end of the bed are two transverse parallel beams 8, which are exltended on one side of the machine, as shown, and on the extended edge of said beams is a stringer 9, on which is mounted a rail 10. J ournaled in suitable bearings 11, attached to the other side of the bed 1, is a shaft 12, on one end of which is fixed a circular saw 18. :On the other end of said shaft is fixed abandpulley 14: for driving the saw-shaft. Fixed on i the bed to one side of the stringers 5 is a workholding table 15 for holding a quantity of.

.bolts or blocks from which the shingles are to 1 be cut. Fixed transversely on the extensions gofthe beams 8 is a board 16, which is set up 0n edge, as shown, one side of which is in alinement with the circular saw, the end of lthe board adjacent to the saw being beveled. as at 17, to permit the end of said board to extend slightly beyond the edge of the saw jfor the purpose hereinafter made apparent.

The numeral 18 indicates a carriage com- 7. Fixed on one end of the-table are two cross-beams 21 and 22, which extend atone L end laterally beyond the table, the cross-beam :22 extending farther from the table than the cross-beam 21. Fixed to the under side of the cross-beam 22 are hangers 23, one on each 'a beam or arm 27, which is normally parallel to the work-table and to the circular saw. The beam or arm 27 is pivoted at one end, as at 27 to the cross-beam 21 and at its other end loosely rests and is adapted to slide on the extended end of the beam'22. A stop 27 is rigidly fixed to. the upper sideof thecrossbeam 22 and limits the movement of said beam or arm 27 in a direction toward the table.

Fixed transversely to the beam 27 are two cross-bars 28. Each of said cross-bars is ions gitudinally slotted, as at 29, and passing through said slots and through the stringer are bolts 30. By loosening the bolts the crossbars 28 may be adjusted transversely to the beam 27 and after the desired adjustment is effected said cross-bars may be rigidly secured in place by tightening up said bolts. Formed in one end of each of the cross-bars 28 is a bearing 31, and jo'urnaled in said bearings is a shaft 32, on which is rigidly fixed a gagebloek 33. Said gage-block is provided with two reversely- inclined sides 34 and 35, said inclined sides of the gage-block being arranged at slight angles to the plane of the saw. Fixed on the shaft 32 is a stop for limiting the rotary movement of the shaft and gage-block, said stop comprising a disk 36, having formed thereon two shoulders 37 and 38, and fixed on the opposite sides of the beam 27 are two spring- pawls 39 and 40, said pawls consisting of'flat springs, which are'each slotted at one end, and passing through said slots are screws or bolts 41 to permit of the lengthwise adjustment of said pawls for the purpose hereinafter to be made apparent. The free ends of the pawls 39 and 40 rest on the opposite sides of the periphery of the disk 36, and the shoulders 37 on said disk are formed at such distances apart that they will alternately be engaged by'one or the other of said pawls, as

the shaft 32, carrying the gage block, is alternately rotated one-quarter of a revolution in alternate directions. The pawls 39 are secured to the upper and lower sides of the arm 27 by screws or bolts 41, which pass through the "elongated slots in said pawls and into the said arm, whereby the said pawls may be adjusted lengthwise on the said arm for the purposeh'ereinafter set forth. The end of the shaft 32 on which the disk is fixed is extended slightly beyond the end of the carriage and is there provided with a crank 42, by means of which the shaft may be alternately partially rotated in opposite directions.

Attached to the free end of the arm 27 is one end of a coiled spring 43, the other end of whichis attached to the extension of the crossbeam 22, said spring exerting a constant force tending to draw the free end of said arm in a direction away from the table. Pivoted to said extended arm of the cross-beam 22 is a trigger 44, one end of which is rabbeted to form a shoulder 45 to engage the free end of the arm 27 and hold said arm in parallelism with the table. The opposite end of the trigg'er is provided with a'pendent arm 46. The shoulderedend of the trigger is held in engagement with the side of the arm 27 by means of a fiat spring 47, which is fixed at one end to the under side of the extended end of the cross-beam 22 and at itsfree end bears against the under side of a pin' 48, fixed in one side of theshoulder end of the trigger, said spring having a constant tendency to hold the shoul dered end of the trigger elevated and in engagement with the side or edge of the pivoted arm 27.

Fixed to the under side of the table, as before described. are two cross-beams 8, one end of each of which is extended away from the bed of the machine, and to one end of the said cross-beam is bolted one end of an arm 51.

The arm 51 is slotted, as at 52, and through said slot passes the attaching-bolt 53, whereby said arm may be adjusted lengthwise. The outer side of the arm 51'is beveled or inclined, as shown, and to said latter inclined side of the arm is attached a cam 54, the arrangement being such that as the carriage moves forward to saw a shingle the pendent arm 46 of the trigger will engage the cam 54, and as the carriage continues to move forward said cam will throw the pendent arm outward, depressing the shouldered end of the trigger until itfinally causes said shouldered end to disengage the pivoted arm, whereupon the coiled spring 43 will immediately contract and draw the free end of said pivoted arm away from the table.

Fixed on the two cross-beams 8 are two uprights 55, on the upper ends of which is rigidly secured a flat plate 56, the inner edge of which is curved, as at 57, said curved edge gradually approaching the carriage toward its rear end, as shown. The plate 56 may conveniently consist of a flat piece of wood and in such case will be provided with a wearplate 58, formed of any suitable metal. Pendent from the pivoted arm 27 is a vertical rod or shaft 59, on the lower end of which is journaled a roller 60, which is adapted when the swinging arm has been released by the trigger to travel in contact with the wear-plate 58, the arrangement being such that after the pivoted arm has been released by the trigger andthe carriage is retracted said roller will travel in contact with said wear-plate, and owing to the curvature of the latter the roller, together with the pivoted arm, will be forced inwardly toward the table,.and thus will restore the arm to its normal position, immediately'upon which the spring 47 will elevate the free end of the trigger and cause the shoulder 45 to engage the side of the pivoted arm and hold the latter in its normal position.

Fixed on the inner side of the work-table 15 is a pin 61, and fixed on the adjacentside of the table is a forwardly-projecting pin 62. said pins being arranged at such relative distances apart that when the table is moved suiiicientl y far forward to saw the shingle the pin 62 will engage the pin 61 and prevent any further forward movement of the table. The movement of the table in thereverse direction islimited by the roller impinging against the end of the wear-plate 58 when the pivoted arm has arrived at its normal position, it being obvious that after this has occurred the roller which is carried by said swinging arm can move no farther toward the carriage.

Hence the carriage can be moved no farther" sidesas 34, for example of the gage-block 33. The bolt wi ll thus be presented at anangle to the saw. The carriage is now moved forward either byhand or by any suitable mechanism which may be provided for the purpose, and as it moves forward it will present the bolt to the saw in such manner that the latter will saw a shingle from one side of the bolt, and in the example herein given the saw operates to first saw the thick end of the shingle, and

as the carriage moves forward the saw will.

operate to cut nearer and nearer to the edge of the bolt, thus producing a shingle thick at one end and gradually tapering towardits other end. Toward the end of the movement of the carriage the pendent arm 26 of the trigger willengage the cam 54, and as the carriage continues to move forward said pendent arm will move outwardly, 'and' thus depress the shouldered end of the trigger,and when the carriage has been moved sufficiently far forward to completely saw the shingle from the bolt said pendent arm will have been 'moved sufficiently far outward to cause the shoulder on the end of the trigger to disengage the free end of the pivoted arm 27, whereupon the coiled spring 43 will draw the said free end of the arm away from the carriage, thus re leasing the shingle and permitting the latter to drop from the machine. As the carriage is moved forward to saw the shingle the shingle as it is cut from the bolt rests upon the upper edge of the board 16, which latter acts the free end of the pivoted arm abuts the stop,

and when this occurs the shouldered end of the trigger will be elevated by the spring A7, and

' the shoulder will engage the side of the pivoted arm and hold the latter in its normal position. The shaft 32 is now given the quarter-turn by means of the crank 42 and. presents the reversely-inclined side 35 of the gage-block 33.

that before described. The carriage is againv moved forward to cause the saw to engage the bolt, and the saw will now operate to commence at the thin end of the shingle to be sawed, and as the bolt moves forward with' the carriage the saw'will cut gradually farther. and farther away from the edge of the bolt, thus sawing from the thin edge of the shingle to the thick edge. The above-described operation is repeated until the entire bolt has been sawed up into shingles. the saw operating I through the medium of the mechanism described to' alternately cut through the edges of the bolt in oppositely-inclined directions, whereby on one movement of the carriage it will commence to cut the shingle from the thick end of the latter and on the next movement of the carriage will commence to cut the shingle from its thin end. By thus sawing the shingles the entire bolt is utilized without waste. 1 v

7 As before described, each of thecross-bars 28 is made endwise adjustable on the arm 27,

whereby the gage-block 33 may be adjusted toward and from the plane of the saw, thus forming shingles of different thicknesses to be sawed. To compensate for such adjustment, the spring- pawls 39 and 40 are also made endwise adjustable in the manner described, so that said pawls will engage the shoulders 37 and 38 on the disk 36.

As shown and heretofore described, the arm 51 is made endwise adjustable on its support, whereby the pendent arm of the trigger may be caused to engage the cam at different periods inthe travel of the carriage to release the arm 27, carrying the gage-block, at asooner or later period of the travel of the carriage to accommodate the releasing mechanism to shingles of different lengths.

I have above described the gage-block 33 as being inclined on two of its sides only; but, as shown in Fig. 7 of thedrawings, said gageblock may be alternately reversely inclined on all four of its sides, as indicated at 3A, 35, 36, and 37, and instead of alternately rocking the shaft 32 partially in one direction and then in the'other the said shaft will be given a stepby-step rotationthat is to say, it will be given quarter-turns successively in the same direction, so asto successively present said inclined sides to the plane of the saw. When the gage-block 33 is thus constructed, the disk 36 instead of being provided with but two shoulders will be provided with four shoulders 64, and one of the pawlsas 40, for example-will be dispensed with, as shown in Fig. 8. Otherwise the operation ofthe device is the same as that before described, excepting that instead of partially rotating the gage-block in one direction and then in the other it will be given a continuous step-bystep rotation in one direction, as immediately above explained.

I have shown and described herein a circular saw as being the preferred means for severing the shingles from the bolt; but it' saw, or other means for severing the shingles may be employed, the particular form of cutnation with a saw and a carriage provided with a work-table, of a gage-block provided with reve'rsely-inclined flat sides and mounted to bring different sides into operative position, said gage-block being arranged to directly engage the work, and a manually-operable means for turning the said different inclined sides into operative position one ata time for the purpose specified.

3. In a shingle-sawing machine, the combination with a saw and a carriage provided with a work-table, of a gage-block provided with reversely-inclined fiat sides and mounted to turn to bring different sides into operative relation, said gage-block being arranged to directly engage the work and means for holding the gage-block in its diiferent adjusted positions for the purpose specified.

4. In a shingle-sawing machine, the combination with a saw and a carriage provided with a work-table, of a gage-block provided with twoTeversely-inclined fiat sides and mounted to turn to bring -either of said sides into operative position, said gage-block being arranged to directly engage the work, for the purpose specified.

5. In a shingle-sawing machine, the combination with a saw and a carriage provided with a Work-table, of a gage-block provided with two reversely-inclined fiat sides and mounted to turn to bring either of said sides into operative position, said gage-block being arranged to directly engage the work, and means for limitingthe movement of the gage-block in both directions and for holding it in its adjusted positions, for the purpose specified.

6. In a shingle-sawing machine, the combination with a saw and a carriage provided with a work-table, of a gage-block provided with reversely-inclined sides and mounted to turn to bring either of said sides into operative position, means for holding said block in its adjusted positions, substantially as described.

7. In a shingle-sawing machine, the combination with a saw and a carriage provided with a work-table, of a gage-block carried by the carriage and provided with reversely-inclined sides, said gage-block being mounted to turn to bring different sides into operative position to directly engage the work, and means for adjusting the gage-block toward and from the plane of the saw, for the purpose specified.

8. In a shingle-sawing machine, the combination with a saw and a carriage provided with a work-table, of a gage-block carried by the carriage and provided with reversely-inclined sides, said gage-block being mounted to turn to present different sides and arranged to immediately and directly engage the work, and

means for limiting the movement of the gageblock about its axis and for holding it in its different adjusted positions, substantially as described.

9. In a shingle-sawing machine the combination with asaw and acarriage provided with a work-table, of bearings movable with the carriage, a shaft journaled in said bearings, a gage-block mounted on the shaft and having reversely-inclined sides, and means whereby the shaft maybe turned to bring said inclined sides, one at a time, into operative position, for the purpose specified.

10. In ashingle-sawingmachine, the combination with asawanda carriage provided with a work-table, bearings movable with the carriage, a shaft journaled in said bearings. a gage-block mounted on the shaft and having reversely-inclined flat sides, and arranged to directly engage the work, and means for arresting the movement of the shaft when any one of said inclined sides has been turned to operative position, substantially as described.

11. In a shingle-sawing machine the combination with a saw and a carriage provided with a work-table, of bearings movable with the carriage, a shaft journaled in said bearings, a gage-block mounted on the shaft and having 'two reversely-inclined sides, means for turning the shaft to alternately bring said inclined sides into operative position, a disk on the shaft provided on its periphery with two shoulders, and two-fixed pawls for engaging said shoulders to limit the movement of the gage-block in both directions, for the purpose specified.

12. In a shingle-sawing machine the combination with a saw and a carriage provided with a work-table, of bearings movable with the carriage and adjustable toward and from the plane of the saw, a shaft journalcd in said bearings, a gage-block mounted on the shaft and having two reversely-inclined sides, means for turning the shaft to alternately bring said inclined sides into operative position, a disk on the shaft provided on its periphery with two shoulders, and two fixed pawls for engaging said shoulders to limit the movement of the gage-block in both directions, for the purpose specified.

13. In a shingle-sawing machine, the combination'with a saw and a carriage provided with a work-table, of a gageblock movable with the carriage and having reversely-inclined flat sides, said gage-block being mounted to turn to bring the different sides one at a time IIO immediately and directly in engagement with the work, means carried by the carriage for retaining the gage-block in its different adjusted positions, and meansfor automatically releasing the gage-block when a shingle is sawed to permit the latter to'drop from the machine, substantially as described.

14:. In a shingle-sawing machine, the combination with a saw and a carriage provided with a work-table, of a gage-block movable with the carriage and" having reversely-inclined sides, said gage-block being mounted to turn to'bring the different sides one at a time into immediate and direct engagement with the work, means carried by the carriagefor retaining the gage-block. in either of its adj usted positions, and means for automatically releasing and withdrawing the gage-block from operative position when a shingle is sawed, for the purpose specified.

15. In ashingle-sawing machine, the combination with a saw and a carriage provided with awork-table, of a gage-block movable with the carriage and having reversely-inclined sides, said gage-block being'mounted to turn to bring either of said sides into immediate and direct engagement with the work, means for retaining the gage block in either of its adjusted positions, means for automatically releasing and withdrawing the gage-block from operative position when a shingle is sawed, and means for automatically returning the gage-block to operative position, substantially as and for the purpose specified.

16. In a shingle-sawing machine, the combination with asaw and a carriage provided with a work-table, of'a swinging arm movable with the carriage, a gage-block carried by said swinging arm and having reversely-ihclined sides arranged to immediately and directly engage the work, said gage block being mounted-to turn to'pres'ent either of said inclined sides one at a time to the work, means carried by the carriage for retaining the swinging arm and gage-block in operative position, and means for automatically releasing and withdrawing said swinging arm from operative position when a shingle is sawed, for the purpose specified.

' 17. In a shingle-sawing machine, the combination with a saw anda carriage provided with a work-table, of a swinging arm movable with the carriage, a gage-block carried by. said swinging arm and having rev'ersely-inclined sides, said gage-block being mounted to present either of said sides one at a time directly to the work, means carried by the carriage for retaining the swinging arm and gageblock in operative position, means for automatically releasing and withdrawing said swinging arm from operative position when a shingle is sawed, and means for automatically returning the swinging arm to operative position for the purposespecified.

18. In ashinglesawing machine the combination with asaw and a carriage provided with a work-table, of a swinging arm movable with the carriage, transverse bars adjustably mounted on the swinging arm, an axiallymovable gage-block mounted in hearings in said bars and having reversely-inclined sides,

with the carriage, transverse bars adjustably mounted on the swinging arm, an axial lymov able gage-block mounted in bearings in said bars and having reversely inclined sides, means carried by the carriage for retaining the swingingarm and gage-block in operative position, means for automatically releasing'and withdrawing said" swinging arm from Opera tive position when a shingle is sa'wed, and means for returning the swinging arm to operative position when the carriage is retracted, for the purpose specified.

20. In a shingle-sawing machine the combination with a saw and a carriage provided with a work-table, of a swinging arm pivoted at one end to the carriage and freely movable at its other end ona support forming a partof the carriage, a gage-block carriedby said swinging arm, a trigger pivoted to said support and arranged to engage atone end the free end of the swinging arm and hold the latter and the gage-block in operative position, a pendent arm fixed to the'other end of the trigger, and

"a cam arranged to be engaged by the pendent arm when a shingle has been sawed totrip the trlgger and release the swinging arm, for the purpose specified.

21. In a shingle-sawing machine the combination with a saw and a carriageprovided with a work-table, of a swinging arm pivoted at one end to the carriage and freely movableat its other end on a support forming a part of the carriage, a spring for throwing the swinging arm out of operative position, a gage-block carried by said swinging arm, a trigger pivoted to said support and arranged to engage at one end the free end of the swinging arm and hold the latter and the gage-block in operative position, a pendent arm fixed to the other .end of the trigger, and a cam arranged to be engaged by the pendent arm when a shingle has been sawed to trip the trigger and release the swinging arm, for the purpose specified.

22. In a shingle-sawing'machine the combination with a saw and a carriage provided with a work-table, of a swinging arm pivoted at one end to the carriage and freely movable at its other end on a support forming a part of the carriage, a stop on said support for arresting theswinging movement of said arm, a gageblock carried by the swinging arm, a trigger pivoted to said support and provided at one end with a shoulder arranged to engage the free end of the swinging arm and hold the latter and the swinging armin operative position, a pendent arm fixed to the other end of the trigger, and a cam arranged to be engaged by the pendent arm when a shingle has been sawed to trip the trigger and release the swinging arm, for the purpose specified.

23. In a shingle-sawing machine the combination with a saw and a carriage provided with a work-table, of a swinging arm pivoted at one end to the carriage and freelymovable at its other end on a support forming a part of the carriage, a spring for throwing the swinging arm out of operative position, a stop on said support for arresting the swinging movementof said arm, a gage-block carried by the swinging arm, a trigger pivoted to said support and provided at one end with a shoulder arranged to engage the free end of the swinging arm and hold the latter and the swinging arm in operative position, a spring for holding the shouldered end of the trigger in engagement with the swinging arm, a pendent arm fixed to the other end of the trigger, and a cam arranged to be engaged by the pendent arm when a shingle has .been sawed to trip the trigger and release the swinging arm, for the purpose specified.

24. In a shingle-sawing machine the combination with a saw and a carriage provided with .a work-table, of a swinging arm pivoted at one end to the carriage and freely movable at its other end on a support forming a part of the carriage, a stop on said support for arresting the swinging movement on said arm, a gage-block carried by the swinging arm, a trigger pivoted to said support and provided at one end with a shoulder arranged to engage the free end of the swinging arm and hold the latter and the swinging arm in operative position, a pendent arm fixed to the other side of the trigger, a cam arranged to be-engaged by the pendent arm when a shingle has been sawed to trip the trigger and release the swinging arm, and means for ad justing the position of the cam to alter the time during the travel of the carriage at which it will be engaged by the trigger-arm, for the purpose specified.

25. In a shingle-sawing machine the combination with a saw and a carriage provided with a work-table, of a swinging arm pivoted at one end to the carriage and freely movable at its other end on a support forming a part of the carriage, a stop on said support for arresting the swinging movement of said arm, a gage-block carried by the swinging arm, a trigger pivoted to said support and provided at one end with a shoulder arranged to en gage the free end of the swinging arm and hold the latter and the swinging arm in operative position, a pendent arm fixed to the other end of the trigger, a cam arranged to clined fiat sides, said gage-block being mounted to turn in the swinging arm to prescntdifferent sides in immediate and direct engagement with the work, means for throwing the swinging arm out of operative position when a shingle has been sawed, and a cam arranged to be engaged by apart carried by the swinging arm when the carriage is retracted for moving the swinging arm into operative position, substantially as described.

27. In a shingle-sawing machine, the combination with a saw and a carriage provided with a work-table, of a swinging arm pivoted at one end of the carriage and freely movableat its other end on a support forming a part of the carriage, a gage-block having reversely-i n- 'clinedfiat sides, said gage-block being mounted to turn in the swinging arm to bring different sides into immediate and direct engagement with the work, means for throwing the swinging arm out of operative position when a shingle has been sawed, and a curved cam arranged to be engaged by a part carried by the swinging arm when the carriage is retracted for moving the swinging arm into operative position, substantially as described.

28. In a shingle-sawing machine, the combination with a saw and a carriage provided with a work-table, of a swinging arm pivoted at one end to the carriage and freely movable at its other end on a support forming a part of the carriage, a gage-block provided with reversely-inelined flat sides and mounted to turn in said swinging arm to bring different sides into immediate and direct engagement with the work, means for throwing the swinging arm out of operative position when a shingle has been sawed, a roller carried by the swinging arm and a cam with which said roller contacts for moving the swinging arm into operative position when the carriage is retracted, substantially as described.

29. In a shingle-sawing machine, the combination with a saw and a carriage provided with r 30. In a shingle-sawing machine the combinatlon With a saw and a carriage provided With a Work-table, a fixed support arranged along' side of the table for supporting the shingle being sawed and comprisinga strip, one edge of Wh1ch is 1n allnement With the saw, the endof said strip adjacent to the saw'be'ing beveled and overlapping the cutting edge of the saw, and a gage-block carried by the carriage for alternately presenting the bolt at reverse I

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