US843451A - Sawmill set-works. - Google Patents

Description

PATENTED' FEB. 5, 1907.

BIO-843,451.

' P. H. GROVE.

SAWMILL SET WORKS.

APPLICATION FILED MAY 18. 1906.

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PATENTED FEB. 5, 1907.

I- H. GROVE. SAWMILL SET WORKS. APPLICATION II'LED MAY 18. 1906.

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FRANK H. GROVE, OF COLUMBIANA, Oill i r EZSiGiOR TO EXTERPBL ri ium '"igi rf-Tjiiiwfw A A 'il iliinl 'Jr the in iii/tin en MAN- UFACT RING COMiANY, OF COLUMBEANA, Gilli), A PAR'INERSI'HP.

SAW Will-i- SET WQRKSU 843,451 Specification of Letters Patent.

Patented Feb. 5. 1907.

Applica ion fi e May 13,1906. Serial Tile 817,442v

Fig. 4 is a detail view of the se;-lever, and

Figs. 5 and 6 are detail views showing the releas devices.

i invention has relation to a device for setting a log to be sawed in proper relation to the st w for different thicknesses cl lumber, my object being to provide means whereby a very fine and uniform adjustment may be obtained, the log being held with a positive grip, but the set being capable of being quickly r leased [or automatic recession.

A further object of my invention is to avoid the loeseness and lost motion which is commonly present in set-works in which pawl-and-ratchet mechanism is employed and which prevents accurate and uniform adjustment.

With these objects in view my invention consists in the novel construction, ar angement and combination of parts, all substantially as hereinafter described, and pointed out in th appended claims.

In the drawings the numeral 2 designates t e usual carriage of the mill, mounted upon for carrying the log to be sawed.

the tracks i indicates the saw, and is one of the adjustable setting-knees, which is mounted in the usual manner to move transversely toward and away from the saw upon suitable guides 6, the movement being ellected by me: ns of the rack 7, engaged by a pinion S on the set-shaft 9.

10 is a lliCtiOll-WhOOl which is rigidly mounted on the shaft 9 and whose periphery is surrounded by a gripping-band 11, the two ends of which are connected to pins 12 cl a lever 13, which is pivoted at 1% to an arm 15,

M being between the two pins 12.

16 is a ilXOLl bracket or sector which is provided wlth a stop 17 tor the purpose 0t lnmte lever 13 in one direc- .c;rl "its move- 1 im. i he stop 17 crmod by a series of .d to a lug of the secw or bolt 19. The stop ist of pins which e sector 16 and any own b: ck and forth tor 16 by l8 may t are seatez re c'l w into s In this manner a very large 1'; age all ustmcnt au be had by e lever 13 in proper rela- I employ in abutment iustable screw 20, seated This screw may be l a simple charge i in order to hold tion to the arm 1 i 5 consisting of an, in a lug 21 of sai: arm. adjusted for en gemelr with the rear edge cl the lever 13 ii pur 'icso supporting said lever in $131 position as to "free the grip- ':ingband 11 from the wheel 10, and thus allow a quick backward movement of the parts.

In order to prevent backward rotation of the wheel 10, 1 provide it with a second friciiou-surl'ace 22, which is engaged by a gripping-band 23. Fulcrumcd on the shaft 9 is an arm or levcr 2+1, whose free end portion is pivotally connected to a lever pivoted at the lined point 25, llie two members 24 and forming a toggle and the two ends of the gripping-baud 23 being connected to the lever 25 at opposite sides oi the pivot of such toggle, as shown in Figs. 5 and 6. A spring 27 is provided lor ill('- purpose of taking up 7 all lost lllOllOil m lhis toggle and to keep the band '23 light on the wheel 10.

It will be readily seen that when the lever 13 is moved forwardly the gripping-band 11 will be auscd lo firmly grip the wheel 10, and thus cause the rotation of the shaft 9, the grippin l ud 23 prevcnliug any backward move-i new L. ol lhe shall; 9. To allow the knee 5 to reccde under the aoiion oi the usual spring 28, the hand-lcver 29 or foot-lever 30 is actuated to move the toggle 24 25, and thereby loosen said band. The lever 30 is a curved arm which is connected to the toggle 25, as shown. in detail in Fig. 15.

The advantages of my invention consist in the simpliciiy ol 'lhe construction and arlulcrumed on the shaft 9, the pivotal point i *augcmem', in die wide range of a ljustmeut which is provided, and in the fact that an accurate and uuil orm adjustment maybe obtained, the gripping-bands preventing all looseness or lost motion such as is commonly present if paWland-ratchet mechanism is employed Various changes may be made in construction and arrangement of the parts by those skilled in the art Without departing from the spirit and scope of my invention.

WVhat I claim is- 1. In a clutch device for the purpose described, a shaft having two frictionsurtaces thereon, an operating-lever i ulcrumed outside of said shaft, a grippingand engaging one of the iriction-suraces and having its ends secured to said lever upon opposite sides of its pivot, a second friction-band engaging the other friction-surface, and a toggle device for controlling the second band; substantially as described.

2. In a clutch device or the character described, a shaft having two friction-surfaces thereon, a friction-ban d engaging one of said surfaces, an actua g-lever for said band, a second hand engag the other friction-surface, a toggle device to which the ends of the second band are connected upon opposite sides of the toggle center, and means for actuating the toggles; substantially as de-;

scribed.

3. In a clutch device of the character described, a shaft having a friction-Wheel thereon, an arm fulcrumed on said shaft and havsaaesi ing an abutment thereon, a lever pivoted to said arm and arranged to engage the abutment, and a friction-band engaging said Wheel and having its ends connected to the lever at opposite sides of its pivot; substantially as described.

4. In a clutch device of the character described, a shaft having a friction-Wheel thereon, an arm fulcrumed on said shaft and having an abutment thereon, a lever pivoted tosaid arm and arranged to engage the abutment, a friction-band engaging said Wheel and having its ends connected to the lever at opposite sides o1 its pivot, and means forlimiting the throw of said lever substantially as described.

5. In a clutch device of the character described, a shaft having tWo friction-surfaces thereon, a friction-band engaging one of said suite "es, an actuating-lever for said band, means "for adjusting the throw of the lever in both directions, and a second friction-band engaging the other friction-surface, and means for controlling the action of the second hand substantially as described.

In testimony whereof I have hereunto set my hand.

FRANK H. GROVE.

Vlitnesscs:

HOMER H. DETWILER, CLARA V. McGINNIS.

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