US631543A - Device for resetting plow-scrapers. - Google Patents

Description

No. 63l,543. Patented Aug. 22, I899.

I -P. A. JACKSON.

DEVICE FOR R'ESETTING PLOW SCRAPERS.

sApplieation med June 1, 1899.}

(No Modem I "6 1? A. Jae/"050R kw attozvm UNITED STATES PATENT OFFICE.

PHILIP ANDREW JACKSON," OF GOODWATER, ALABAMA.

DEVICE FOR RESETTING PLOW-SCRAPERS.

SPECIFICATION forming part of Letters Patent No. 631 ,543, dated August 22, 1899. Application filed June 1, 1399. Serial No. 719.002. (No model.)

To all whom it'vnay concern:

Be it known that I, PHILIP ANDREW J ACK- SON, a citizen of the United States, residing at Goodwater, in the county of Ooosa and State of Alabama, have invented a new and useful Device for Resetting Plow-Scrapers, of which the following is a specification.

My invention relates to devices for resetting plow blades or scrapers; and one object is to provide a simple implement for use by blacksmiths adapted to quickly and accurately give the desired shape to the scraper.

A further object is to provide the implement with dies which may be adjusted to give more or less inclination to the wings on opposite sides of the central offset of the scraper.

To those familiar with the use and repair of scrapers used on 'cultivators or plows it is well known that the wings become bent out of shape when the device has been in use for a considerable length of time. When the misshapen blade or scraper is carriedto a blacksmith for resetting, it is sometimes difficult to give both wings the same angle or inclination and to obtain the proper offset at the middle of the scraper. The present device is designed to provide a metal-working artisan with a simple and efficient means adapted to easily and quickly restore the desired shape tothe ofiset and the wings of the scraper.

With these ends in view the invention consists in the novel combination of elements andthereof in the accompanying drawings, forming a part of this specification, and in which Figure 1 is a perspective view of a scraperresetting device, illustrating one embodiment of my invention. Fig. 2 is a plan view thereof. Fig. 3 is a vertical transverse section on the plane indicated by the dotted line 3 3 of Fig. 2 and showing the movable die closed upon the bed. I Fignlisadetail plan view of thebed. Fig. 5 is an inverted plan view of the movable die, showingits lower working face. Fig. 6 is a vertical cross-section of another embodiment of the invention, in which the bed and the movable die are equipped with ad justable die-blocks. Figs. 7 and 8 more spectiv ely a plan and an inverted plan of the bed and the movable die, forming parts of the resetting device shown by Fig. 6. Fig. 9 is an edge view of the modification illustrated by Fig. '7. Fig. 10 is a detail in perspective of the type of plow-scraper operated upon by the resetting device contemplated by the present invention.

Like letters and numerals of reference designate corresponding parts in the several figures of the drawings. g

The type of plow-scraper operated upon by the resetting device forming the subject-matter of the present application is shown in Fig. 10 of the drawings, and this type of scraper essentially consists of a body having a central fiat offset A, adapted to fit the plowfoot and provided therein with the usual bolt-hole a. The body of the plow-scraper has extended from the opposite sides of the central offset A the oppositely-located rearwardly-divergent wings B, said wings being transversely inclined and also provided with the usual beveled under side 0, whereby the body of the scraper is caused to taper toward the front cutting edge thereof. In addition to the features described the plow-scraper body is provided at the junction of the wings with the central flat offset A, with the inclined shoulders or bevels D. This is the ordinary construction of the type of plowscraper shown in Fig. 10 of the drawings, and in order to provide for imparting the correct shape thereto the complementary dies'of the resetting device must necessarily have working faces accurately following the contouror outlines of the scraper-body, and I shall now proceed to describe the particular construction of said resetting device.

of a bedlO,having an upright or post 11, a movable die 12, and a lever 13, which is fulcrumed on the upper end of the post and is connected operatively with the movable die for adjusting thelatter relatively to the bed in the manner hereinafter more fully described.

The upper surface of the bed 10 accurately conforms to the outline of the plow-scraper body, and tosecure thedesired shape the said bed is constructed with a central-approxi- The resetting device particularly consists mately rectangular flat raised boss 14-, having at the side thereof the beveled shoulders 15, which decline from the surface of the boss 14 and correspond in shape and inclination to the inclined shoulders D of the plowscraper body. The bed 10 is further provided at opposite sides of the central raised boss 1 1 with the inwardly-divergent facets 16 17. The said facets 16 17 are sloped downwardly from the plane of the boss 14:, preferably at an angle of about fifteen degrees and also transversely inclined at an angle of about twenty-seven degrees to correspond to the longitudinal and transverseinclination of the scraper-wings B. At the outer edge thereof the bed 10 is provided with an upwardly-inclined marginal chamfer 19, which follows the inclination or slope of the inclined facets 16 17, as well as extending across the outer edge of the boss 14, as plainly shown in Fig. I of the drawings. This marginal chamfer 19 corresponds to the beveled under side G of the scraper-blade, so that the bed will accurately fit the said blade in its correct shape.

The die 12, which works above the bed 10, is a complement of the said bed and corresponds in area and contour thereto. To provide for the die 12 matching the upper surface of the scraper-blade shown in Fig. 10, as well as corresponding to the shape of the bed 10, the said die is provided in its under or lower surface with a transverse recess 20 and at opposite sides of said recess with the inwardly-divergent and downwardly and transversely inclined facets 21, corresponding to the facets 1G 17 of the bed 10. The said central recess 20 of the die 12 corresponds in shape to the raised boss 14: on the bed, and at the side edges of the groove 20 the under surface of the die 12 is provided with the beveled shoulders 22, which correspond to the similar shoulders of the bed 10 and fit upon the inclined shoulders D of the plow-scraper body.

To insure the upper die 12 fitting the outer edge portion of the scraper-blade, which tapers on account of the beveled under side C, the said upper die 12 is provided on its under side and at the outer edge thereof with a continuous upwardlyinclined marginal chamfer19", which lies above and conforms to the corresponding chamfer 19 of the bed 10. As shown, the inclination of the chamfer 19 is very slight, because this chamfer or bevel is not intended to partake of the distinct pitch of the chamfer 19. In fact the chami'er 19 (shown in the drawings) is not necessary, and in the practical operation of the machine may be entirely dispensed with.

To insure proper registration of the movable die with the bed, I provide guide devices arranged to direct the movement of the die when it approaches the bed. One of the guide devices consists of lugs 23, which are integral with the bed at the inner edge thereof and on opposite sides of the raised boss 14, and these lugs project upwardly beyond the working face of the bed, so as to engage with the inner edge of the movable dieas itapproaehes the bed. Another guide device which I employ is a stud 21, which is fast with the bed at a central pointthereof, so as to project above the upper surface of the raised boss 14, and this stud is adapted to enter a socket 25, which is produced in the recessed face 20 of the die 12. Another guide device consists of pins or studs 29, which project from the outer edge of the movable die 12 and are spaced at proper distances apart to embrace the post 11 of the resetting device, whereby the pins 29 are adapted to travel with the die and to have slidable engagement with the post for directing the die as it is raised or lowered by the lever.

In order to connect the movable die with the operating-lever, the die is provided on its upper side with a pair of lugs 26, to which is pivoted the lower end of a link 27, which link has its opposite end fitted in the slot 28 of the lever 13 and suitably pivoted thereto, thus attaching the link to the lever and the movable die to the link, so that the die and link will move as the lever is raised or lowered, whereby the lever maybe thrown over to one side of the base in order to separate the die from the bed to enable the workmen to readily place the heated scraper-blade in position on the working surface of the bed.

In the embodiment of the invention represented by Figs. 6 to 9, inclusive, I have equipped the bed and the movable die with die-blocks, which are adapt-ed to be adjusted for the purpose of giving more or less offset and inclination to the scraper-blade, and in order to accommodate the die-blocks said bed and movable die are provided with grooves in which the die-blocks are seated. The bed 10 is provided with a wide channel 32 and with a flange 33, which is on the lower side of the bed at the inner thin edge thereof, said flange extending beyond the inneredge 0f the bed in order to form a seat for the adjustingscrews, presently referred to. In the wide channel of the bed is fitted a lower die-block 34., which has its workin g face disposed above the plane of the facets 16 17, and thus this die-block 31 is the equivalent for the raised boss 14:, which is integral with the bed in the construction shown by Figs. 1 to 5, inclusive. The die-block 34 is provided with threaded sockets which receive the adjusting-screws 35, that pass through the block and are adapted to bear upon the flange 33, and the length of the lower die-block exceeds the width of the base, so that the inner edge of the dieblock extends beyond the corresponding edge of the base, whereby the adjusting-screws 35 are disposed beyond the base to be outof the way of the upper die-block and are readily accessible to the workmen for adjusting the die-block 3i relatively to the facets on the bed. The upper movable die 12 is provided with a wide channel 36. In this channel of the movable die 12 is fitted a tapered block 38, and to this die 12 are fitted the adjustingscrews 40, which have threaded engagement with the upper die-block 38 for the purpose of adjusting the latter in the channel 36 of the movable die 12. Each die-block is held in place, either on the bed or the movable die, by means of pintles or lugs 41, which extend laterally from the side edges of the dieblock and are fitted in recesses or sockets 42, it being understood that these recesses are provided in the rear edges of the bed 10 and the movable die 12'. From this description it will be seen that each die-block has a hinged connection at one end, and to the other end is attached one or more adjusting-screws, whereby the die-block is confined in position on the bed or movable die, and its free edge may be adjusted by proper manipulation of the screws.

The resetting device of my invention is designed to be placed on a work-bench, table, or other suitable means of support, and the bed 10 is provided on its wide outer edge with laterally-projecting lugs 30, which are perforated for the passage of screws or bolts adapted to fasten the bed firmly in place.

In using the device the misshapen scraperblade is heated in a forge or by other suitable means and is brought to the resetting device for treatment or manipulation. The lever is raised to carry the movable die 12 away from the bed, and the heated scraper is fitted on the bed for the stud 24 to pass through the opening which is usually provided in the offset of the scraper. This scraper is placed on the working surface of the bed 10 for the wings of said scraper to rest upon the inclined facets 16 17, while the boss 14 or die-block 34 enters the offset portion of the scraper. The scraperhaving been placed in proper position, the lever is lowered to bring the movable die 12 into proper position above said scraper, so that the groove 20 or die-block 38 will be presented opposite to the scraper offset, while the facets 21 will lie above the scraper-wings. The operator now exerts pressure upon the lever to force the die 12 upon the heated scraper, and the die and beds are thus made to coact for the purpose of giving the proper shape to the ofiset and the desired inclination to the scraperwings. The lever is now lifted to move the die 12 away from the work, and the latter is lifted off the bed.

It may be desirable to provide the bed at its inner edge with a recess or notch 4:3,adapted to receive the jaws of the tongs by which the work is manipulated.

In using the resetting device of the c011- struction shown by Figs. 6 to 9, inclusive, the operator may adjust the screws of either die-block in order to position said die-blocks relatively to the bed and the movable die for giving more or less offset and inclination to the scraper-blade, as will be readily apparent to those skilled in the art.

Changes in the form, proportion, size, and

the minor details of construction within the scope of the appended claims may be resorted to without departing from the spirit or sacrificin g any of the advantages of this invention.

What I claim is- 1. A resetting device for plow-scrapers comprising a bed having on its working surface a raised center, and transversely and downwardly inclined divergent facets at opposite sides of said center, and a movable die working above the bed, and having a central transverse recess, and at opposite sides of said recess downwardly and transversely inclined divergent facets, substantially as set forth.

2. Aresettin g device for plow-scrapers comprising a bed having on its Working surface a raised center, transversely and downwardly inclined divergent facets at opposite sides of said center, and beveled shoulders at the junction of the facets with the center, and a movable die working above the bed and having a central transverse recess, and at opposite sides of the latter being provided with downwardly and transversely inclined divergent facets, substantially as set forth.

3.. Aresetting device, comprisinga bed provided with a raised center, inclined divergent facets at said opposite sides of said center, and a continuous upstanding marginal chamfer at the outer edge thereof, and a movable die working above the bed and having a central transverse recess and provided at opposite sides of the latter with inclined divergent facets, substantially as set forth.

4. A resetting device forploW-scrapers comprising a bed and a movable die having complementary downwardly and transversely inclined divergent facets, the said bed'and die also respectively having at the centers thereof a registering projecting stud and recess, substantially as set forth.

5. In a device for resetting plow-scrapers, a channeled bed having inclined facets, and an adjustable die-block fitted in said channel of the bed, in combination with a movable die, and means for adjusting the latter, substantially as described.

6. In a device for resetting plow-scrapers, a movable die provided with a central channel between inclined facets, and a die-block adjustably supported within the channel and movable with said die, in combination with a bed, and a lever fulcrumed on the bed and linked to the movable die, substantially as described.

7. In a device for resetting plow-scrapers, the combination of a bed having inclined facets, a movable die with corresponding facets, die-blocks adjustably connected to said bed and the movable die, and each having means for adjusting the same independently of the other die-block, and means for separating the movable die with relation to the bed, substantially as described.

8. In a device for resetting plow-scrapers, two elements each having a central groove, die-blocks fitted in the grooves of the elements, and each hinged at one edge thereto, and adjusting-screws for moving the dieblocks relatively to the elements, substantially as described.

9. In a resetting device for plow-scrapers, a bed provided with a channel and a flange between inclined facets, a die-block hinged at one edge to said bed, and adjusting-screws for moving the die-block relatively to the inclined facets of the bed, in combination with a movable die, and means for adjusting said die, substantially as described.

10. In a device for resetting plow-scrapers, a movable die provided with a channel between inclined facets, a tapered die-block hinged at one edge to said movable die and

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