US1892497A

US1892497A - Outfeed carriage

Info

Publication number: US1892497A
Application number: US529652A
Authority: US
Inventors: Victor H Winquist
Original assignee: MILL ENGINEERING AND SUPPLY CO
Current assignee: MILL ENGINEERING AND SUPPLY Co
Priority date: 1931-04-13
Filing date: 1931-04-13
Publication date: 1932-12-27
Anticipated expiration: 1949-12-27

Description

4 Sheets-Sheet l v. H. wxNQulST OUTFEED CARRIAGE Filed April 13, y1931 Dec. 27, 1932.

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lo l il t ,4 /Wwiclgfivincluisi Muff/4 l TTRN YS Dec. 27, 1932- v. H. WINQUIST OUTFEED CARRIAGE Filed April 13, 1931 4 Sheets-Shea?l 5 4 .A Mw da /o 8f 48 N u N. H9 wv.` a 7 o W a l M 36 0 e 3 3 Dec. 27, 1932. v. Hw1NQU1sT 1,892,497

OUTFEED CARRIAGE Filed April l5. 1931 4 Sheets-Sheet 4 Je, 4a, 4o

4 n 96 El E z Wwimggmnfqlogi M r M A TTORNE KS Patented Dec. 27, 1932 Unirse einer VICTOR H. WINQUIST, OF SEATTLE, XASEEINGTON, ASSIGNOR T0 MILL ENGINEERING AND SUPPLY COMPANY, 0F SEATTLE, WASHINGTON, A CORPORATION OF WASH- INGTON OUTFEED CARRIAGE Application filed April 13,

My present invention relates to the art of sawmill machinery and more particularly to an outfeed carriage which is intended for the handlingof a log as it emerges from a gang saw. Y

Present day operations in the lumber industry require that the mill operators employ every mechanical aid which will assist them in reducing the cost of producing lumber. The tqangsaw, by which is meant a plurality of saws all of which engage the logatI the same time, has been used for many years in sawmill opera-tions. lt has always had the objectionable waste motion in the handling of the sawed material as it emerges from the gangsaw. In the present carriage arrangement it has been possible to provide means which, with the minimum labor involved, will handle the sawed log as a unit. The present carriage illustrated can be easily operated by a single operator, therefore rThe principal objectof my present invention is to provide an outfeed carriage which will grip the sawed log and permits its economical handling as a unit.

A further object is to provide means which will quickly and completely release the sawed log when it has been carried as a unit to the desired position in the mill.

VA still further object is to provide means whereby the releasing mechanism can be easily effected by the operator from his usual standinor position without regard to the'exact longitudinal disposition of the sawed'log.

Other and more specilic objects will be apparent from the following description taken in connection with the accompanying drawings, wherein Figure l is a top plan view showing my carriage and its operatingmechansm so as to illustrate the general functioning of the same. Y

Figure 2 is a side elevation of Figure l.

Figure 3 is a fragmentary detailed view showing a top plan of my log engaging means.

Figure l is a side elevation of Figure 3.

Figure 5 is an end elevation of Figures 3 and 4. y

Figure 6 is an enlarged fragmentary view 1931. Serial No. 529,652.

of the releasing mechanism in its tripped or releasing position.

Figure 7 is an enlarged plan view of portions of Figure 3, the same beingshown in its released position.

Figure 8 is a cross sectional View along the line 8 8 of Figure 3.

Figure 9 is a fragmentary sectional View along the line 9-9 of Figure 6 and is intended to more clearly illustrate the functioning of the released spring.

Referring to the drawings, throughout which, like reference characters indicate like parts, numeral l0 designates the main frame of my outfeed carriage. This is adapted to be supported from suitable trackage l2 by means of the iianged wheels le and 16, which are suitably mounted on transversely disposed aXles so as to properly engage both rails on which the carriage operates. It is necessary, of course, to have a reasonable distance between the

track wheels

14 and 16 in order to assure suliicient rigidity in the carriage. Disposed at the end of carriage l() nearest the gangsaw 18 is a log supporting member 2O which is adapted to support the entire weight of one end of the log L. The opposite end of carriage l0 isprovided with upstanding bearing

support members

22 and 23, which provide a suitable support for the transversel shaft 24. Disposed around shaft 24 is a tube 25 which is of such a length and size that it will revolve freely on shaft 24 and bet-Ween support

members

22 and 23. Pivotably disposed upon tube 25 and also capable of transverse movement thereon is a carriage head 26 to Which are pivotably secured at 28 and 29 respectively the claw`

members

30 and 32.

The claw members 3() and 32 have secured at f their outer ends the

log engaging dogs

33 and 34 respectively. These members are provided with swiveling log tips which have a plurality of teeth, annularly arranged,and which are held in place by central bolt members 39 which have an inner pointed endadapted to form the center of the dog assemblies.

' The inner ends of

members

30 and 32 are formed as

crank arms

36 and 37 and are preferably bifurcated as is best illustrated in Figure 8. Between the yoked ends of the claws are disposed outstanding lugs on the traveling nut 38. Now, as it is necessary to take care of the arc of swing of

arms

36 and 37 it is necessary that a slotted arrangement be provided for the coupling pins 40. It has been found most convenient to have these slots in the lugs of the traveling nut 38. Traveling nut 38 is provided with an interior thread which is adapted to engage the external thread 42 which is formed at one end of the grip screw 43. Grip screw 43 is axially disposed with reference to the carriage khead 26 and is provided at its outer end with the hand wheel 44 which is fxedly secured to it.

Abutting the hub of hand wheel 44 is a center block 46 within which screw 43 is free to revolve. A set collar 48-is provided on the opposite side of center block 46 so as toprevent longitudinal movement of the same with 2or respect to screw 43. Center block 46 is provided with outstanding trunnions, one on each side of the same, as indicated at 50. These trunnions are each engaged by the clamp levers 52. Levers 52 are pivoted at 53 to a bracket 54 which is formed as part of the carriage head. At their upper ends levers 52 are jointed together at 56 by the centrally disposed locking link 57 which in turn is pivotably connected at 58 to the locking lever 59. The locking link is bifurcated to form a yoke which extends around to engage both sides of lever 59 and the end face 60 is so shaped as to provide an engaging surface for lever 59 when the same is in the locked position. It has been found convenient to provide an adjusting screw 6l on the locking lever, which when in the locked position, provides a control of the amount the locking device toggles past its central position.

The locking lever 59 is pivotably secured at 63 to an upstanding portion of the carriage head 26. As a means for holding the carriage head and its associated mechanism just described in the desired transverse position, I have provided the clamp member 64. This is adapted on partial rotation to pinch together a. split journal which forms part of the carriage head 26 after a manner well known in machinery of this general character.

It is necessary to provide a releasing mechanism for the gripping device just described and this is provided with the releasing lever 66, which, tocompensate for any wear which might occur, is provided at its outer end with a lock screw 67 which is adapted to engage the under side of the locking link 57 and to raise the same when it is desired to unlock the mechanism. Releasing lever 66 is provided with a floating key 65 that is adapted to engage a keyway, running substantially the full length of the kick-ofi' .shaft 68.,

Lever 66 is included between the

journals

69 and 70 which support the kick-off shaft and are themselves part of the carriage head 26. This provides means for moving lever 66 along the kickoff shaft and maintains it in its operating position directly below link 57. Further, due to its manner of support the kick-off shaft revolves about shaft 24 as the carriage head is rotated about the same. At each of its opposite ends the kick-off shaft is spaced from shaft 24 by the

guide arms

71 and 72. These arms are free to rotate on shaft 24 and serve merely to prevent the end of the shaft springing.

At the operating side of the carriage the extreme end of the kick-off .shaft has secured to it the kick-off lever 74. This is provided at its lower end with a slot adapted to receive a pin 76 which is secured between the bifurcated end of the kick-off operating lever 78. The operating lever 78 is pivotably secured to a boss on frame member 23 by means of pin 79. Now, it is essential for the satisfactory operation of this device, that levers 74 and 78 be so proportioned that when the head is in its locked position, pin 76 will be co-aXially disposed with shaft 24. The kicked operating lever 78 has pivotably secured on its lower side, at 8O a substantially vertically disposed connecting rod 81. At its lower end connecting rod 81 is pivotably secured to the carriage lever 82. This is fiXedly secured to a short shaft 83 which is journaled in a boss formed as part of frame member 23 and at its opposite end shaft 83 has secured to it the adjustable lever 84. l have provided, as a convenience, at its upper end a set screw which is threaded into lever 84 at 85. This, together with a compression .spring 86, which is adapted to press against the under side of lever 84, provides a definite position of rest for lever 84. The lower end of lever 84 is provided with an adjustable set screw 87. This screw is normally adjusted until it just clears its operating bar 88.

Inasmuch as it is very necessary to be able to release the claw members while the carriage is in any position relative to its track, I have provided an operating bar 88 which extends the full length of the carriage travel. The means I have employed which must be understood as only one solution, is to mount bar 88 on a plurality of operating stand levers 90 so that linkage may be arranged to move bar 88 toward or away from the carriage. It is believed apparent to anyone skilled in this class of machinery that any form of operating mechanism might be employed at this point. For instance, bar 88 might be arranged for vertical movement and could beV made to function equally as well as the arrangement shown. `In my present showing a hand lever 92 is connected to the bar 88 by means of the connecting bar 94 and arm 95 which in turn is formed as part of one of the operating stand levers 90.

ln order to facilitate a very quick release l provide a compression spring 96 which is disposed about a tension bolt 97 which in turn is 'secured to a downwardly extending lug formed as part of center block 46. t will be understood that a suitable washer woulr. need to be provided at the outermost end of the bolt 97 so as to keep the spring under coinpression. Disposed so as to take the opposite end of spring 9G under control I provide the spring stirrup 9S which in turn is pivotably secured to pin 99 which is secured in a boss which is formed as part of head 6. Y l/Vhile any means might be employed for moving my carriage along its tracks the cable drive shown in Figures l and 2 has proven very satisfactory. This consists of an endless cable which has sufficient turns about a driving drum 100 to drive the cable when under load. Any suitable source of power might be used; in the present instance I have indicated a driven shaft 102 which is provided with two drive` pulleys which are connected by suitable belts to the shaft upon which drum 100 is mounted. I have indicated one straight belt and one cross belt with the usual selective engagement clutches so that either forward or rearward movement may be given to the carriage, it being understood that the cable at one point is secured to the carriage.

Method of operation In operating my carriage the same is moved to within a few feet of the gangsaw 18, in fact as close as the auxiliary rest carriage 104 will permit. Here dogs 3S and 34: are adjusted manually by means'of the operator grasping handwheel 44 and tilting the same about shaft 24 as a pivot until the dogs engage the log at or near its horizontal diameter. The claws are then moved together inwardly by means of handwheel lf-l which in turn mov-es traveling nut 38 towards the hand wheel. This operation is completed, however, only after locking lever 59 has'been placed in the position indicated in Figure il, which is its locked position.

If, however, the head end of the log is not centered it is necessary to move the entire head transversely on tube 25 until the artis of the head is in the vertical plane of the logs center. The carriage head should then be clamped by means of clamp 6l to prevent further transverse movement.

`It should be understood that the headis clamped to tube 25 which, while being of a length to just fit between the

frame members

22 and 23 permits free rotation in a vertical glane. This rotation is essential as protruding knots, unevenness on the log or crookedness tend to lift and lower the log end as it passes through the feed rolls. Further, due to this necessity the log engaging dogs are constructed so they can swivel and thus avoid being torn loose from the log.

The carriage and log L is then carried out along its tracks, until the log has entirely passed through the gangsaws, by the driv= ing action of the gangsa-w feed rolls. By mea-ns of the vcable drive in which the cable was indicated at 106, the log which now rests upon the log rest 2O of the carriage and the auxiliaryY log rest 104, is carried out to a position where it will be released, and made available for edging. lNhen this point is reached the operator by manipulation of lever 92 forces bar 88 inwardly until it engages the lock screw of the adjustable lever 84. rIhus, through medium of lever 82, the connecting bar 8l moves the kick-off operating lever '.78 downwardly. This in turn, by means of the kick-off lever 7l, which is operated thereby, revolves the kick-off shaft suiiciently so that member 66 will engage the under side of locking link 5?' and raise it upwardly until the toggle arrangement, formed by tl e locking link and the locking lever 59, has been pressed past its locking line. At this point the compression spring 96 carries the movement forward. As the stirrup is secured directly to member 26 at its opposite end, the energy is transferred to screw 42, the action of the spring is to move screw l2 longitudinally toward the log.` This motion is transferred to the

claws

30 and 32, and thus provides for a limited travel, but one which is accomplished very quickly. ils soon as the claws spread apart the rests upon which the log has been in repose are tilted and the lumber is free to ,slide downwardly to a point where it can befed into the next opera tion. This action is Great convenience aside from the ease with which it releases the sav-.Ted log, because where the timber is more or less of the same size a rearward movement of the locking lever 59, to the position shown in .Figure- 4:, quickly brings the claws inwardly again to the position they assumed when released and it is only necessary for the operator to make a slight adjustment with the hand wheel ed and then set the dogs securely in the log. A skilled operator can quite accurately tell by inspection if the new log is Y larger or smaller than the other he has just discharged.. If he feels that it is slightly larger it will be necessary for him to throw the dogs outwardly slightly by hand wheel del so that he can use his quick motion provided by the locking lever 59.

The foregoing description and the accompanying drawings are believed to clearly disclose a preferred embodiment of my invention but it will be understood that this disclosure is merely illustrative and that such changes in the invention may be made as are fairly within the scope and spirit of the following claims.

'W hat I claim is:

l. An outfeed carriage consist-ing of a frame resting on trackage disposed coaXially with the feed line of a gangsaw; a transverse Cri shaft journaled in said frame; a carriage head pivotabljv positioned upon said sha t and disposed for longitudinal movement thereon; clamping means forme-d as part of said head adapted to clamp said head to said shaft; oppositelv positioned claw members pivotably secured to said carriage head and having inwardly extending crank arms looking means adapted to position said a clamp levers pivotably supported bf; said carriage head and adapted to pivotably support said locking` means; a locking' link pivotably secured to the upper ends of said clamp levers; a locking lever pivotablj1 secured to said carriage head and pivotablj7 engaging; said locking` link in such a manner as to provide a 'toggle lock; operating; means adapted to open the toggle lock; an adjustable lever pivotablj/v secured to the frame; a connecting, rod pivotablv secured to the said operating' means and operativelqvY connected to the adjustable lever; an operating bar disposed in parallel relationship to the carriage track and adapted to the adji t' ilo lever at any point of the carriage travel; and means for moving said bar to operate said adjustable lever.

2. An outfeed carriage consisting o frame resting on tracl age disposed coari Y" with the feed line of a ganasaw; a transvei shaft journaled in said frame; a er head pivotably positioned upon said shaft and disposed for longitudinal movement thereon ;rclamping' means formed as part of said head adapted to clamp said head to said shaft; oppositely positioned claw members nivotabliY secured to said carriage head and having inwardljT etendinp; crank arms: a travelingnut provided with means for engaging said arms; a grip screw coaxialljf disposed with said carriage head and adapted to engage said nut in a manner to move it long-itudinallj7 of said screw; a center block adapted to journal the opposite end of said grip screw; clamp levers pivotablv supported bv said carriage head and adapted to plvnt ably support said center block; a ioek link pivotabl;7 secured to the upper ends or said clamp levers; a locking lever pivotablj; secured to said carriage head and pivotably engaging said locking lin l in such a manner as to provide a toggle lock; a kickoff shaft; an adjustingl lever slidablv secured to seid kicked shaft and adapted to opere said locking link; journals kickoii' shaft formed as pa y head; a kickoif lever 1i t ured to the kickoff shaft; an operating bar disposed in parallel relationship to the carrii re track; means for moving` said operating bar; corneet-ing` means adapted to operatively connect said kickoff lever and said operat bar; and resilient means operati@ nected to the center block and the carriage head adapted to urge the two members together.

8. An outfeed carriage consisting of a frame resting on trackage disposed coaxially with the feed line of a gangsaw; a'transverse shaft journaled in said frame; a carriage head pivotably positioned upon said shaft and disposed for longitudinal movement thereon; clamping means formed as part of said head adapted to clamp said head to said shaft; oppositely positioned claw members pivotably secured to said carriage head and having inwardly extending crank arms; a. travelingI nut provided with means for engaging said arms; a grip screw coaxially disposed with said carriage head and adapted to engage said nut in a manner to move it longitudinally of said screw; a center block adapted to journal the opposite end of said grip screw; clamp levers pivotably supported by said carriage head and adapted to pivotably support said center block; a locking link pivotably-secured to the upper ends of said clamp levers a locking lever pivotably secured to said carriage head and pivotably engaging said locking link in such a manner as to provide a toggle lock; means secured to said grip screw to prevent longitudinal movement of the center block with respect to said screw; a. kickoff shaft; an adjusting lever slidably secured to said kickoff sli-aft and adapted to operatively engage said locking` link; guide arms disposed one at either end of said kickoff Yshaft and adapted to space the same from the transverse shaft; journals for said kickoff shaft formed as part of the carriage head; a kickoff lever iixedly secured to the kickoff shaft; an operating link pivotably secured to the frame, adapted to engage said kickoff lever in such a manner that the point of engagement will be coaxially disposed with said transverse shaft when the toggle locking mechanism is in its locked position; an adjustable lever pivotably secured to the frame; a connecting rod pivotably secured to the operating link andv operatively connected to the adjustable lever; a resilient means operatively connected to the center block and the carriage head adapted to urge the two members together; an operating bar disposed-in parallel relationship to the carriage track and adapted to engage the adjustable lever at any point of the carriage travel; and means for moving said bar to operate said adjustable lever.

4. An outfeed carriage consisting of a frame resting on trackage disposed coaxially with the feed line of a `gangsaw and having upwardly7 extendingside members; a transverse shaft secured in said frame side members and adapted to space said members; a tube ournaled upon said shaft and disposed to cover that portion of said shaft exposed between said members; a carriage head pivotahly positionedl upon said tube and dis- CTI posed for longitudinal movement thereon; clamping means formed as partfof said head adapted to clamp said head to said shaft; oppositely positioned claw members pivotably secured to said carriage head and having in- Wardly extending crank arms; a traveling nut provided with means for engaging said arms; a. grip screw coaXially disposed With said carriage head ann adapted to engage said nut in a manner to move it longitudi nally of said screw; a center block adapted to journal the opposite end of said grip screw; clamp levers pivotably supported by said carriage head and adapted to pivot-ably support said center block; a locking link pivotably secured to the upper ends of said clamp levers; al locking lever pivotably secured to said carriage head and pivotably engaging said locking link in such a manner as to provide a toggle lock; means secured to said grip screw to prevent longitudinal movement of the Center block with respect to said crew; a kickoff shaft; an adjusting lever slidably secured to said kickoff shaft and adapted to operatively engage said locking link; guide arms disposed one at either end of said kick` off shaft and adapted to space the same from the transverse shaft; journals for said kickofl" shaft formed as part of the carriage head;

a kick-olf lever iXedly secured to the kickoff shaft; an operating link pivotably secured to the frame, adapted to engage said kickoff lever in such a manner that the point of engagement will be coaxially dispos-ed with said transverse shaft when the toggle locking mechanism is in its locked position; an adjustable lever pivotably secured to the frame; a connecting rod pivotably securecL to the operating link and operatively connected to the adjustable lever; a spring operatively connected to the center block and the carriage head adapted to urge the tivo members together; an operating bar disposed in parallel relationship to the carriage track and adapted to engage the adjustable lever at any point of the carriage travel; and means for movin@ Said bar to operate said adjustable lever. Y

5. An outfeed carriage consisting of a frame disposed for longitudinal movement; a transverseshaft supported by said frame; a carriage head pivotably supported by said shaft; log engaging claws pivotably supported by said head; clamping means formed part of said head adapted to clamp said head to said shaft; locking means adapted to position said claws; clamp levers pivo'tably supported by said carriage head and adapted to pivot-ably support said locking means; a` locking link pivotably secured to the upper ends of said clamp levers; a locking lever pivotably secured to said carriage head and pivotably engaging said lock link in such a manner as to provide a toggle lock; operating means adapted to open the toggle lock; an

adjustable lever pivotablyl secured to the frame; a connecting rod pivotablysecured to the said operating means and operatively connected to the-adjustable lever; an operating bar disposed in parallel relationship to a transverse shaft supported by said frame; v

a carriage head pivotably supported by said shaft; log engaging claws pivotably supported by said head' clamping means formed as 7 l m part of said head adaptedto clamp said head .to said shaft; locking means adapted to position said claws; clamp leverspivotably supported by said carriage head and adapted to pivotably support said locking means; a lookin@ link pivotably secured to the upper ends of said clamp levers; a locking lever pivotably secured to said carriage head and pivotably engaging said 'locking means in such a manner as to provide a toggle lock; operating means adapted to open the toggle lock; an adjustable lever pivotably secured to the frame; a connecting rod pivotably secured to the saidvoperating means and operatively connected to the adjustable lever and means for operating saidconnecting rod.

'l'. rin outfeed carriage consisting of a frame disposed for longitudinal movement; a transverse shaft supported by said frame; a carriage head pivotablyl supported by said shaft; log engaging claws pivotably supported Lby said head; locking means adapted to position said claws; a kick-off shaft disposed transversely of the carriage; guide arms disposed, one at each end of the transverse shaft and engaging the kick-olf shaft in a manner to maintain it in parallel relationship With respect to the transverse shaft; a kick-od lever secured to said kick-o shaft, a releasing lever slidably secured to said kickoff shaft and adapted to engage the locking means in a manner to release the same; an operatingbar disposed parallel to the axis of movement of the carriage and means for operatively connecting the operating bar to the kickoff lever.-

8. An outfeed carriage consisting of a frame disposed for longitudinal movement; a transverse shaft supported by said framed; a carriage head pivotably supported by said shaft; log engaging clavvs pivotably supported by said head; locking means adaptedV to position said clavrs; a kick-off shaft disposed transversely of the carriage; a releasing lever slidably secured to said kick-off shaft and adapted to engage the locking means in a manner to release, the same; an Operating bar disposed parallel to the axis of movement of the carriage and means for operatively connecting the operating bar to the kick-off lever.

sok

9. An outfeed carriage consisting of a frame disposed for longitudinal movement; a transverse shaft supported by said frame; a carriage head pivotably supported by said shaft; log engaging claws pivotably supported by said head; locking means adapted to position said claws; a kick-off shaft disposed transversely of the carriage; guide y arms disposed, one at each end of the trans- 10 fer shaft and disposed to engage the kick-off shaft and hold it in parallel relationship With the transverse shaft; a releasing lever slidably secured to said kick-off shaft and adaptedto engage the locking means in a manner to release the same; an operating bar disposed parallel to Jthe axis of movement of the carriage and means for operatively connecting the operating bar to the kick-off Op lever.

0 10. An outfeed carriage consisting of a frame disposed for longitudinal movement; a transverse shaft supported by said frame; a carriage head pivotably supported by said shaft; log` engaging claws pivotably o supported by said head; locking means Vadapted to positionsaid claws; a rockable kick-off shaft disposed in parallel relationship to said transverse shaft; a releasing lei .do ver slidably secured to said kick-off shaft and ""0 adapted to engage the locking means in a manner to release the same; an operating lever pivotably secured to said frame; a sliding pivot means operatively connecting the kickoff lever and the operating lever and so positioned that when the locking means is in its locked position, the axis of the pivot means Will coincide substantially With the axis of the transverse shaft, an operating bar disposed parallel to the axis of movement of the carriage and means for operatively connecting the operating bar to the kick-off lever.

11. An outfeed carriage consisting of a frame disposed for longitudinal movement; a transverse shaft supported by said frame; a kick-off shaft disposed transversely of the carriage; a carriage head pivotably supported by said transverse shaft and having a bifurcated rearward extension, which is bored to accommodate the kick-off shaft; log engaging claws pivotably supported by said head; locking means adapted to position said claws; a releasing lever slidably disposed upon the kick-off shaft, Within the bifurcation of the said carriage head extension and adapted to engage the locking means in a manner to release the same; an operating bar disposed parallel to the aXis of movement of the oarriage and means for operatively connecting the operating bar to the releasing lever.

In Witness whereof, I hereunto subscribe my name this 31st day of March A. D. 1931.

VICTOR H. VVlNQUIST.