US1149058A - Feed mechanism for shingle-machines. - Google Patents

Description

F. B. HUNTINGTON.

FEED MECHANISM FOR SHINGLE MACHINES.

APPLICATION FILED 0CT.29| i914.

Patented Aug. 3, 1915.

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FEED MECHANISM FOR SHINGLE MACHlNES. APPLICATION HLED 001.29. 1914.

1,149,058. Patented Aug. 3, 1915.

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FEED MECHANISM FORSHIN GLE-MACHINES.

Specification of Letters-Patent.

Application filed October 29,1914. Seria1 No. 869,299.

new and useful Improvements in Feed Mechanisms for Shingle-lilachines, of which the following is a specification, reference being had to theaccompanying drawings.

My invention relates to new and useful improvements in feed mechanism adapted for use with a shingle machine of thetype shown .inLetters Patent No. 885,327, granted .April 21, 1908, .to The Sumner .Iron Works, of Everett, Washington, although it the mechanism may be adapted for use with other machines.

The primary objectofmyinvention is to provide an automatic self-locking ratchet feed mechanism. capable of. fine andaccurate adjustment and having a widerangeforadjustment without removal from the machine, the parts being capable of be ng quickly adjusted and themechanism being extremely simple in construction.

VViththese objects in view myinvention consists in the detailsof construction and arrangement hereinafter more fully described.

In order that those skilled in the art to which my invention appertains maydmow how to make and use myimproved mechanism, I will now proceed ,to describe the same,;referring hynumerals to the accomp y g d ng i .Wh ch Figure 1 is a diagrammatic v ew show ng the relation of the feed mechanism with a shingle machine, thelatter shown in broken lines; Fig. 2 is anend elevationofthe feed mechanism and feed rollers; Fig.3 is a ,vertical sectionof feed mechanism andiitscasing on the line a a of Fig. 2, the broken,

lines showing the ,directionjof thetilt, or ,vibration; vFig. 4 is ahorizontal section, on the line 6-6 of Fig.1.

Referring to these drawings, ,wherein similar reference numerals indicate, like parts, 1 designates a ratchet wheelhaving formed therewith a pinion 2 whose plane. is oifset from the plane of ,the ratchet teeth. Intermeshing with the pinion 2. is a toothed gear- 3, and coacting with the ratchet teeth is a pawl or dog 4-, all of these partsbeing inclosed Within a suitably shaped casing 5. The gear 3 is formed with an elongated hub 6 extending through and slightly beyond the casing 5 on both sides of the casing, and this ihollow hubfi being'mounted upon the shaft 11, ,formsthe pivotal axis for the casing 5.

*Thehub 6 at one end is formed with a dia- -metr callyextending slot ,7 and at the other end with a diametrically extending slot 9.

Either one of these slots is adapted to receive a pin 10 whereby the gear may be pinned to the shaft to turntherewith. The ObJQCt ofhaving the diametrical slots in opposite ends of the. hub is to permit the easing 5, to .be reversed in its position upon {the .hub 6 so that the same mechanism may be used .for'the upper feed and ,for the. lower feed, aswill be later stated. Anut 12,.fits

uponithe endofthe shaft 11 and holds the casing rigidlyin place.

The shaft 11 carries a plurality of feed rollers 14 adapted to engage a block from .which shingles are to besawed. Therefore, when this shaft ll'isrotated in the. direction ofthearrowin Fig. 3, ifthefeed rollers ,engage the upperface of; the block, or in adirection reverse to. the arrow if the feed rollers are designed to engage the lower face of the hlock,the feed rollers-will beactuated to feed the shingle block forward to permit theshingle to be cut fromtheend thereof in a;manner well known intheart and fully illustrated in the patent before referred; to.

Referring {to Fig. 1, it will be seenthat there are ,two sets of feed rollers, one above the block and one below the block, and;that these feed rollers must move in reverse directions. 'Eachset of feedrollers is of course actuated by the mechanism shown in ;Fig. 8, the mechanism, however, for the two feed rollers beingreversed relative. to each other. ,zEachcasingo is oscillated upon its axial center by an arm ,15 which is pivotally con- ,vnectedat {16 ,to ,the casing, and attheother end is pivotally connectedtoone armof a bellcrank lever 17 mounted upon the frameworkof the machine as illustrated in Fi 1. y 7 D ,The inwardly directed arm of. each bell crank lever, carries upon it a roller '18, andthe eX- .tent of oscillationof each bell crank lever is controlledbyan adjusting screw 19 mounted in .a suitable bracket 20 secured upon the frame of the machine. ,.I have illustrated these adjusting screws for this purpose, but .itwillbe understood that other means might beused' if desired.

. The normahposition of each casing is that shown in dotted lines in Fig. 1. When one shingle hasbeen sawed from the block, cer- Patented Aug. 3,1915.

tain cams designated 21 and illustrated dia-' grammatically in dotted lines in Fig. 1, en-

gage the rollers 18 and cause the bell crank that Fig. 3 is a view of the lowermost feed device, the normal position of which is shown in dotted lines in Fig. 1, then upon the corresponding bell crank lever being os cillated by contact of the roller 18 with the cam 2l, the rod 15 will be shifted in the direction of the arrow a, Fig. 3. This will carry the casing in the same direction around the axis formed by the shaft 11. This would cause the gear 2 to rotate in the direction of the arrow were it not that the gear is prevented from rotation by the pawl I. The gear 2 being held from rotation by the pawl 4, the gears 2 and 3 will be locked and the shaft 11 will as a consequence be rotated in a clockwise direction. Upon a reverse movement, however, the gear 2 will rotate upon the gear 8 in a counter-clockwise direction, the teeth of the ratchet 1 slippingby the pawl 4. The amount of rotation will of course depend on the length of the stroke of the rodvl5 and this length of stroke is regulated by the adjusting screw 1 19. The

operation is the same for the upper feed mechanism except that in this upper feed mechanism the pawl 4. extends in the direction opposite to that shown in; Fig. 8 andv the teeth of the ratchet wheel 1 also extend in an opposite direction, so that a pull upon the rod will cause the rotationof the shaft 11 connected theretoflin a counterclockwise directionand the gear wheel 2 1 will run idle upon the gear 3 uponan outward movement of the rod 15. Thus the blockwill be fedoutward into position for anewcut. j 7

It will be understood of course, that in thistype of machinethe feeding devices are mounted upon a sliding carriage and that the cams 2l are relatively fixedly mounted with relation to the carriage. These cams will engage with the rollers 18 to cause the feedingforward of the block. ,7 The objection to the feed mechanism described in the patent heretofore referred to and used on machines manufactured under this patent is that the feed is too coarse and cannot be finely and accurately adjusted because the adjusting screws mustgbe set with relation to the space between the ratchet teeth. "It is obvious that with my mechanism the fineness of the adjustment is controlled by the size of the teeth on the ratchet and by the ratio between the pinion gear and the toothed gear wheel, this ratio in the drawings being 1 to 3. As the feed mechanism is inclose'd within thefcasing it cannot become clogged with dirt and sawdust, nor

are there any projecting parts to catch in the clothes of the operator and act to impede the operation of the ratchet mechanism; Having described my invention, what I claim is:

1. In a mechanism of the character described, a shaft, a toothed gear wheel mounted thereon and fixed thereto, a pinion wheel meshing with the toothed gear wheel, and having peripheral ratchet teeth, a supporting member pivotally mounted on the shaft and rotatably supporting said pinion, a pawl carried by the supporting member and engaging the ratchet teeth of the pinion, and means for oscillating said supportin one direction but preventing its rotation i in the other direction, and means for oscillating said supporting member.

3. Ina mechanism of the character described, a shaft, a toothed gear wheel I mounted thereon for rotation therewith, a

supporting member mounted upon the shaft as an axis, a pinion carried by said supporting member and meshingwith the toothed gear wheel, means carried by the supporting member permitting a rotation of the pinion in one direction but preventing its rotation in the other direction, and means for oscillating said supporting member, said means including a bell crank lever and a member engageable with the bell crank lever to oscillate it. t

4:. In a mechanism of the character described, a shaft, a toothed gearwheel mounted upon the shaft, a supporting member rov tatably mountedupon the shaft, a pinion carried by the supporting member and meshing with the toothed gear wheel, means preventing a rotation of the pinion in one direction but permitting a rotation in the,

other direction, a bell crank lever having a connection between one of the arms of the lever and-the supporting member, means for shifting the bell crank lever to thereby oscillate the supporting member to cause the rotation of the shaft, and adjustablemeans for limiting the length of movement of the bell crank lever.

5; In a mechanism of the character dethe shaft, a pawl carried by the member, a ratchet wheel also carried by the member and with which the pawl engages, and gear wheels operatively engaging the shaft with scribed, a shaft, a member oscillatable on:

said ratchet wheel, said shaft being locked to the member for common movement therewith by said pawl upon a movement of the member in one direction but unlocked therefrom upon a movement in the opposite dition.

6. In a mechanism of the character de-s scribed, a shaft, a member oscillatable on the shaft, a pawl carried by the member, a ratchet wheel carried by said member and with which the pawl engages, and gear wheels freely rotatable in engagement with each other upon a movement of the member in a direction to carry the pawl over the ratchet teeth but locked from independent rotation with each other upon a common movement of the member, ratchet wheel, and pawl.

7. In a mechanism of the character described, a shaft, a member movable concentric thereto, a wheel carried by said member, means for locking the wheel to the said member upon a movement of the member in one direction, said means releasing the wheel upon a movement in the opposite di- O'opies of this patent may be obtained for five cents each, by addressing the rection, and gear wheels disposed between said wheel and shaft operatlvely engaging,

them with each other.

8. In a mechanism of the character described, a shaft, a casing oscillatable upon the shaft, a pawl carried by and within said casing, a ratchet wheel rotatably mounted in said casing and with which the pawl engages, and gear wheels disposed within the casing operatively engaging the shaft with said ratchet wheel, said shaft being locked to the casing by said pawl upon a movement of the casing in one direction and unlocked therefrom upon a movement in the opposite direction.

In testimony whereof I hereunto aifix my signature in the presence of two witnesses.

FRED B. HUNTINGTON.

Witnesses:

FRANK R. BARRY, ATLANTA E. BRIoes.

Commissioner of Patents,

Washington, I). G.

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