US1024775A - Sawmill set-works. - Google Patents

Description

L. J. HANHART.

SAWMILL SET WORKS. IPPLIOATIQN IILEI) SEPT.25, 1909.

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L. J. HANHART.

SAWMILL SET WORKS.

APPLIOATIOK FILED SEPT. 25, 1909.

Patented Apr.-30,1912.

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UNTTED STATES PATENT OFFIOE.

LOUIS J. HANI-IART, OF CINCINNATI, OHIO, 'ASSIGNOR TO J. A. FAY & EGAN COMPANY,

OF CINCINNATI, OHIO, A CORPORATION OF WEST'VIRGIN IA.

SAWMILL :snrwo-ims.

Specification of Letters Patent.

Patented Apr. 30, 1912.

Application filed September 25, 1909. Serial No. 519,591.

To all whom it may concern:

Be it known that I, LOUIS J. HANHART, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Sawmill Set- WVorks, of which the following is a specification.

My invention relates to sawmill set-works, and has for its object the provision of novel and improved means whereby setting of the knees is accomplished accurately and the distances of advance of the knees controlled in major steps capable of subdivision into minor steps in novel manner for permitting accurate control of the distances of approach of the knees toward the saw-blade.

The inventionwill be readily understood from the following description and claims, and from the drawings, in which latter:

Figure 1 is a side elevation of my invention, shown in connection with so much of a sawmill as is necessary to illustrate its application. Fig. 2 is a plan view of the same. Fig. 3 is an enlarged side elevation of the operating lever, partly broken away, and showing the means for controlling its limits of movements; and, Fig. 4 is a longitudinal section of the same on the line z2 of Fig. 3.

1 represents a sawmill carriage which is operable lengthwise, as on tracks 2, back and forth across the position of the sawblade indicated at 3. The carriage has thereon suitable setting-knees 4 which are movable crosswise of the carriage, a suitable number of setting-knees being employed. The setting-knees are instanced as stock or log-securing parts which have movement toward and from the saw-blade position. The setting-knees may be slidable on headblocks 5 and operated by a set-shaft 6 which has suitable connection with the settingknees for moving the same toward the sawblade position. Thus each setting-knee has a rack 7 with which a pinion 8 on the setshaft meshes, the setting-knees sliding on a guide-way 9 on the head-block. The setting-knees may be returned to initial position in a suitable manner, as by a spring 10 in a usual manner.

For moving the setting-knees toward the saw-blade position I provide an operating lever 11 which has suitable connection with the set-shaft 6. This connection between the operating lever and the set-shaft may comprise a shaft 12 and pinions 13 14, shown as segment-pinions, rockable about the shaft 12, one of the pinions having a bracket 15 on its hub into which the operating lever is received. The pinions are suitably secured together for moving in unison, as by providing one of the pinions with a lug 16 and the other of the pinions with lugs 17 18, set-screws 19 20 being received in the lugs 17 18 for impinging against the lug 16 and thereby permitting adjustment between the segment-pinions 13 14 about their rotary axes and causing said pinions to move in unlson.

21 22 are gears, shown as segment-gears, journaled about the set-shaft 6. The segment-pinion 13 meshes with the segmentgear 21. The segment-pinion l4 meshes with a gear 23 mounted on a shaft 24 and in turn meshing with the segmentgear 22. These parts may be mounted in side-frames 25 26 having bearings 27 for the set-shaft, bearings 28 for the shaft 12, and bearings 29 for the shaft 24.

31 is a ratchet-wheel secured to the set shaft, with which suitable pawls on the segment-gears are arranged to make engagement. Thus the segment-gear 22 may carry pawls 32 33 on studs 34 35. In the construction shown one of the pawls engages the teeth of the ratchet-wheel while the other is in mid-position, suitable means being provided for throwing the pawls out of engagement with the ratchet-wheel. Thus the pawl 32 is provided with a heel 36 adapted to engage a heel 37 on the pawl 33.

38 is a cam having a flat face 39 for permitting the pawls to engage the ratchetwheel and provided with a handle 40 for causing the cam-face thereof to engage the heel 36, thereby depressing both heels and disengaging both pawls. A spring 41 located between the heel 36 and the pawl 33 urges the pawls into engagement with the teeth of the ratchet-wheel. The segmentgear 22 is provided with similar pawls and attendant parts indicated by similar but primed reference numerals.

For controlling the movements of the setting-knees I provide a stop with relation to which the operating lever has movement, the stop being adjustable for major divisions of angular movement of the operating lever, and a further stop provided with adjustable engaging faces for subdividing said major divisions of angular movement of the operating lever into minor divisions thereof. Thus at is a bracket on one of the sideframes and has an arc-piece 47 thereon provided with a series of apertures a8 spaced apart at equidistant angles with relation to the pivot of the operating lever, which operates adjacent to said are. A pin 49 is selectively received into said apertures and forms a stop for the throw of the operating lever. A main stop for controlling the major divisions of travel. of said operating lever and of travel of the settingknees is thus provided. For subdividing these major divisions of travel, I provide a supplemental stop shown as a block on said operating lever adjustable for presenting different points thereof to said step. Thus 51 is a block which is provided with a series of engaging faces or points of which there may be a suitable number, exemplified at 52 52 52 52 The block is adjustable on the lever for presenting any of said engag ing points or faces to the main stop &9. Thus the block has a guideway 53 therein through which the operating lever is received for permitting the block to be moved lengthwise of the operating lever. For positioning the block at suitable points lengthwise of the operating lever, in positions for selectively bringing the engaging faces, which may be stepped, into obstructing range of the stop 49, I provide obstructing parts between the operating lever and block. Thus 54L is a tooth arranged to selectively engage notches in the operating lever. The tooth 54: is shown on a lever 56 pivoted to the block at 57 and having a handle 58 adjacent to the handle 59 for moving the block, a spring 60 between said levers urging the tooth into engagement with the notches, and the handles being relatively so disposed that the hand in grasping the operating handle 59, will also encompass the handle 58.

61 a permanent stop for the backward throw of the lever. It is preferably adjustable to take up wear of the parts. It is shown as a slide having an engaging face 62 thereon and adjustable on a lug 63 of the arc-piece by means of a belt 6 1 threaded. in a lug 65 of the slide and impinging the lug 63, a clamp-bolt 66 being received through a slot 67 in the slide into said lug 63, for clamping the permanent stop in ad} justed position.

In operation, if it is desired to adjust the range of movement of the operating lever for major divisions of angular movement thereof, the main stop or pin 49 is selectively placed into one of the apertures 48 and the block 51 adjusted into normal position on the operating lever for causing for instance the face 52 thereof to engage the main stop or pin. Each of these major divisions may be the equivalent of a resultant travel in the setting-knees for instance of one-fourth inch. These major divisions may be subdivided into suitable minor divisions by the provision of the movable engaging faces on the operating lever which may be brought into selective engagement with the pin 49 by adjustment of the block 51 on the operating lever. Each of these minor divisions of angular movement of the lever may be instanced as resulting in steps of one thirtysecond inch of movement in the knees. These divisions may be varied and the resultant step-by-step movements of the knees may be subdivided into minute subdivisions if desired.

By means of my improved device I am enabled to provide delicate and accurate adj ustments of angular throw of the operating lever and. resultant travel of the settinglrnees, enabling me to provide small differences in the step-bystep travel of the setting-knees by mechanism which is simple and economical in construction and accurate in results.

Having thus fully described my invention, what I claim as new and desire to se cure by Letters Patent is:

1. In a manually operated sawmill setworks, the combination of a settingknee, an operating lever having operative connection with said setting-knee for setting the same, an adjustable permanent stop, a major division stop, said operating lever having angular movement bet-ween said stops, means for adjusting said major-division stop for major divisions of movement of said settingknee, a contact-block mounted on and moving with said operating lever, said contactblock having contact-points thereon for minor divisions of movement of said settingknee at one side of said contact-block cooperating with said major-division stop, and means for adjusting said block on said lever for placing selective ones of said contactpoints into contacting range with said major-division stop for controlling minor divisions of movementof said setting-knee, and said contact-block having a contact-face at its opposite side contacting said permanent stop at similar lever positions throughout the range of adjustments of said contact-blocl 2. In a manually operated sawmill setworks, the combination of a setting-knee, an operating lever having operative connection with said setting-knee for setting the same, a stop for major divisions of movement of said setting-knee, means for adjusting said stop for said major divisions, a block, said block and operating lever having a guide way therebetween extending lengthwise of said lever and movable with said lever, said guide-way comprising a guide-face movable into various angular distances with relation to said stop, said block provided with contact-faces, and means for adjusting said block on said guide-face and lever for placing said contact-faces on said block selectively in range with said stop for minor adjustments of movement of said setting-knee, and the said guide-way arranged for receiving the blow of contact of said block with said stop in a direction substantially perpendicular to said guide-face.

3. In a manually operated sawmill setworks, the combination of a setting-knee, an operating lever having operative connection with said setting-knee for setting the same, a stop for major divisions of movement of said setting-knee, means for adjusting said stop for said major divisions, a block, said block and operating lever having a guideway therebetween extending lengthwise of said lever and movable with said lever, said guide-way comprising a guide-face movable into various angular distances from said stop, said block provided with superposed contact-faces, and means for adjusting said block lengthwise of and on said operating lever for placing said contact-faces on said block selectively in range with said stop for minor divisions of movement of said settingknee.

l. In a manually' operated sawmill setworks, the combination of a setting-knee, an

operating lever having operative connect-ion with said setting-knee for setting the same, a stop for major divisions of movement of said setting-knee, means for adjusting said stop for said major divisions, a block, said block and operating lever having a guideway therebetween extending lengthwise of said lever and movable with said lever, said guide-way comprising a guide-face movable into various angular distances with relation to said stop, said block provided with superposed stepped contact-faces, said contactfaces being located in the angle between said stop and guideface, and means for adjusting said block lengthwise of and on said operating lever for placing said stepped contact-faces on said block selectively in range with said stop for minor divisions of movement of said setting-knee, and the said guide-face arranged for receiving the blow of contact of said block with said stop in a direction substantially perpendicular to said guide-face.

In testimony whereof, I have signed my name hereto in the presence of two subscribing witnesses.

LOUIS J. HANHART.

Witnesses:

RICHARD D. CoAN, HARPER G. Ross.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G.

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