US2145568A

US2145568A - Shingle mill

Info

Publication number: US2145568A
Application number: US168884A
Authority: US
Inventors: Faber John Joseph
Original assignee: BELSAW MACHINERY Co
Current assignee: BELSAW MACHINERY Co
Priority date: 1937-10-14
Filing date: 1937-10-14
Publication date: 1939-01-31
Anticipated expiration: 1956-01-31

Description

Jana 31,1939. .1. J, FABER ,1 SHINGLE MILL Filed on. 14, 1957 2 Sheets-Sheet 1' INVENTOR, Jo/m Jase 0h Fahe/ I, ATTORNEY5.

Jan. 31f, 1939.

J. J, FABER SHINGLE M LL" 2 Sheets-Sheet 2 Filed Oct. 14, 1937 ,IINVENTOR, Jab/7 Jamey/2 Fahe/z ATTORNEYS.

Patented Jan. 31, 1939 UNITED STATES PATENT OFFICE.

SHINGLE MILL Missouri Application October 14, 1937, Serial No. 168,884

6 Claims.

The primary object of this invention is to provide block-carrying structure for shingle mills of well known types, such as shown in United States Letters Patent No. 1,316,555, dated September 23, 1919, which structure is capable of periodically shifting a plurality of blocks and of holding said blocks in a clamped condition without the employment of complicated, expensive, and bulky parts.

Another important aim of this invention is the provision, in a shingle mill, of block-carrying structure, having a pair of specially formed and related coacting, block-holding jaws, both of which are mounted upon a common shaft and that move about the axis of said shaft to shift the block being held during the operation of the mill.

A further aim of this invention is the provision, in a shingle mill of the aforementioned type, of a pair of specially formed and related jaws, one of which is relatively long, pivotally mounted at one end, and movable about the pivot point by manually operable parts that are in connection with the free end of the jaw.

A still further object of the invention is to provide a pair of coasting, block-holding jaws for shingle mills, both of which are pivotally mounted upon a common shaft, and one of which carries means for moving the other when the jaws are being adjusted to hold the block, both of said jaws being movable about the axis of said shaft after the block is in place.

The specific structure embodying the preferred form of the invention is exemplified by the accompanying drawings, and includes an illustration of some of the minor objects of the invention, all of which will become apparent during the course of the following specification, referring to the accompanying drawings, wherein:

Figure l is a fragmentary, perspective view of a shingle mill, having block-carrying structure associated therewith, and made in accordance with the present invention.

Fig. 2 is a fragmentary, top plan view of the shingle mill illustrated in Fig. 1.

Fig. 3 is an enlarged, fragmentary, detailed, sectional view through a portion of the shingle mill, to one side of one set of jaws, and

Fig. 4 is a sectional view through a portion of the shingle mill, taken on line IVIV of Fig. 3.

Shingle mills embodying the broader principles of this invention usually include a saw 8, driven through the medium of shaft Ill journalled in frame l2, upon which is mounted the carriage assembly l4. Tracks I6 form a part of frame l2 and rollers or wheels 18 ride upon tracks l6 when carriage I4 is moved toward and from saw 8. As blocks 28 are forced past saw 8, a portion is out therefrom, which is in the form of a tapered slab or shingle when the blocks are disposed at the proper predetermined angle. As these aforesaid shingles or slabs are out from blocks 28, it becomes necessary to advance the same in a step-by-step movement each time carriage l4 completes a trip past saw 8.

The mechanism for imparting the step-by-step movement includes a pair of slidably mounted racks 22, carried in appropriate grooves 24 of carriage I4, and movable longitudinally in one direction by the manual manipulation of handle 26. Fig. 1 illustrates the manner in which handle 25 is loosely mounted upon shaft 28 so as to have its dog 30 engage teeth 32 of ratchet Wheel 34. This ratchet wheel is keyed or otherwise rigidly fastened to shaft 28 so that as it turns in bearings 36, pinions 38, in mesh with each rack 32 respectively, are rotated to force the rack in one direction.

The distance of forward travel by racks 22 is determined by the distance between

stop pins

48 and 42, between which handle 26 must swing. When dog 30 is completely withdrawn from teeth 32, racks 22 are moved to the point of beginning by spring 44, disposed as indicated in Fig. 1.

From the foregoing it is to be observed that the amount that each rack 22 is advanced is the same, and that if the outer faces of blocks 29 were not shifted to angular planes, the slab cut therefrom, by saw 8 would be of uniform thickness. The block-carrying structure, therefore, which embodies this invention, is employed in combination with the parts above set down, so that the outer faces of blocks 20' might be properly disposed to have cut therefrom, a slab or shingle which decreases in thickness as one end is approached. It has been found desirable to employ at least two sets of jaws for at least two blocks 20, so that upon the completion of one round trip past saw 8 by carriage 14, two shingles will be created. The two sets of jaws which hold blocks 20 are identical in structure, and therefore but one set will be set down, in detail.

A frame 46 extends transversely across racks 22 and is secured thereto by brackets 48, parts of which form bearings 50 for the reception of bar 52. This bar 52 may be moved to and fro by manipulating lever 54, which is carried by frame 46 through the medium of a bolt or analogous means 56. Bar 52 is joined to lever 54 by the slot and pin construction 58, which permits the related movement illustrated in Fig. 3. Frame 46 carries a vertically disposed shaft 85 which extends from one side of frame 46 to the other, in a bridging relation thereto. A relatively long jaw 62 is pivotally carried by shaft 68 at one end so that the other end may move about the axis of. the shaft. The said other end is formed to present an inturned hook 64, against which one end of block 20 is pressed when the relatively short jaw 66 is forced into clamping engagement with the opposite end of block 28.

This jaw 66 is pivotally supported by shaft 60 for independent movement, and means is mounted upon jaw 62 for forcing jaw 66 against the block. This means is plainly shown in Figs. 3 and 4, and includes a lever 68, pivotally mounted as at i upon jaw 62, so that its cam face '12 will bear against jaw 66 at the portion thereof projecting to one side of the major plane of jaw 62. In this regard, it is important that jaw 66 be in a plane that is transverse to the major plane of jaw 82 so that a portion thereof extends to each side of jaw 62. Manifestly, when lever 68 is forced about the axis of pin 10, jaw 66 will cooperate with hook 64 of jaw 62 in securely holding block 2G in the operative position.

Both sets of jaws are constructed substantially as just described and in each instance bar 52 is connected to the free end of jaw 62 by a link 14. This link, when moved from the position shown in full lines of Fig. 4 to the position shown in dotted lines thereof, will force jaw 62 to the position thereof shown in dotted lines. The outer face of block 20 will be disposed at an angle to the plane of saw 8 so that when the block is moved past the saw, a shingle of tapering form will be out therefrom. Lever 54 is moved to the other end of its path of travel so as to return jaw 62 after the first shingle has been cut and, therefore, when the block is again moved past saw 8, its outer face will be in a plane at an angle to the plane of saw 8.

Lever 26 is actuated after the blocks have been moved past saw 8 and before they are again so moved, so that a uniform form of shingle is always produced. This aforesaid operation is continued until all of the usable portion of block 20 has been converted into shingles. Thereafter only the portion clamped remains to be removed from

jaws

62 and 66 so that another block may take its place.

It is obvious to one skilled in the art that the unique disposition of

jaws

62 and 66 and the effective manner of shifting these jaws together about the axis of shaft 50 when a block is in place presents a simple, effective manner of properly disposing the blocks with respect to saw 8 without creating objectionable wear and wracking upon the other varts of the mill It has been found in practice when a step-by-step forward movement is obtained by advancing racks 22 different amounts, that inaccuracies occur and parts of the machine quickly become worn and therefore unreliable for the production of shingles of uniform character.

Obviously, shingle mills of different appearances than the one illustrated might be made to embody the invention without departing from the spirit thereof and scope of the appended claims.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1. In a shingle mill of the character described, block-carrying structure comprising a frame; a shaft carried by the frame, a pair of coacting block-holding jaws pivotally supported on the shaft; meanson one of said jaws for turning the other jaw about the pivotal support independently of the first mentioned jaw whereby to selectively engage a block; and means for simultaneously swinging both of said jaws around said pivotal support.

2. In a shingle mill of the character described, block-carrying structure comprising a frame; a shaft on the frame; a jaw pivotally supported at one end by the shaft and provided with a hook at the other end; a relatively short jaw pivotally supported by said shaft and extending toeach side of the plane of the first mentioned jaw; means on the jaws for swinging the relatively short jaw about the shaft when engaging or disengaging a block; and means for swinging both of said jaws about the shaft when the same are engaging a block.

3. In a shingle mill of the character described, block-carrying structure comprising a frame; a shaft on the frame; a jaw pivotally supported at one end by the shaft and provided with a hook at the other end; a relatively short jaw pivotally supported by said shaft and extending to each side of the plane of the first mentioned jaw; means on the jaws for swinging the relatively short jaw about the shaft when engaging or disengaging a block; a bar slidably journalled in the frame adjacent to the said jaws; and a link joining said bar and the first mentioned jaw.

4. In a shingle mill of the character described, block-carrying structure comprising a frame; a shaft on the frame; a jaw pivotally supported at one end by the shaft and provided with a hook at the other end; a relatively short jaw pivotally supported by said shaft and extending to each side of the plane of the first mentioned jaw; means on the jaws for swinging the relatively short jaw about the shaft when engaging or disengaging a block; a bar slidably journalled in the frame adjacent to the said jaws; a link joining said bar and the first mentioned jaw; and a lever on the frame in operative connection with the said bar to reciprocate the same and thereby oscillate the first mentioned jaw about the said shaft.

5. In a shingle mill of the character described, block-carrying structure comprising a frame; a pair of coacting block-holding jaws pivotally supported on the frame; and means on one of said jaws for turning the other jaw about the pivotal support independently of the first mentioned jaw whereby to selectively engage a block, said turning means for the said other jaw being a lever, pivotally secured to the said one jaw, provided with a cam face for engaging the other jaw as the lever is moved about its pivotal mounting.

6. In a shingle mill of the character described, block-carrying structure comprising a frame; two

spaced-apart shafts on the frame; a long jaw pivotally supported at one of their ends on each shaft respectively; a hook formed at the other ends of the long jaws; a short jaw pivotally supported on each shaft extending laterally to each side of the associated long jaw; means on each long jaw for turning the associated short jaw about the axis of the shaft independently of the long jaw; a bar journalled in the frame for rectilinear reciprocation and extending past both of said long jaws; a link joining each long jaw, near the hooked end, and the bar; and means for sliding the bar whereby to simultaneously swing all of said jaws about the shafts when blocks are engaged by the jaws on each shaft.

JOHN JOSEPH FABER.