US229863A - Earth-scraper - Google Patents

Description

(No Model.)

A. R BYRKETT.

Earth Scraper. No. 229,863. Patented Julyl3, 1880.

MPETERS, PHOTO-LITHOORAPNER. WASHINGTON. D c.

I UNITED STATES.

PATENT OFFICE.

AHIJAH B. BYRKETT, OF TROY, OHIO.

EARTH-SC RAPE'R.

SPECIFICATION formingpartof Letters Patent No. 229,863, dated July 13, 1880. Application filed May 31, 1880. (No model.)

.To all whom it may concern:

Be it known that I, AHIJAH R. BYRKETT, a citizen of the United States, residing at Troy, in the county of Miami and Stat'eof Ohio, have invented certain new and useful Improvements in Earth-Scrapers f and I do hereby declare the following to' be a full, clear, and exactdescription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters.

7 or figures of reference marked thereon, which form a part of this specification.

This is an improvement in that class of earth-scrapers which are arranged to revolve for the purpose of dunipin g the load, and while being filled are locked in position.

The improvement consists in constructing the frame-work of stout bars of metal and the body or lining of some light material, such as sheet metal or wood, the bars supporting and strengthening said lining at its bottom edges, its center, and also alongits top edge.

The improvementfurther consistsin strengthening the front portion of the scoop by the application to each side'thereof of cheek-plates, which are rigidly secured to the side and top barsof the frame-work; in a cutter or scraper having its rear edge split to receive the front edge of the scoop-lining, the front ends ofthe cheek-plates, and the frontv ends of the bars sustaining the bottom of the scoop, the split portion of the cutter, and the front ends of the cheek-plates, thescoop and the bands being firmly bolted or otherwise secured together,

thereby forming an exceptionally strong cut-- ter or scraper, capable'of resisting a great strain. Y

The improvement further consists inthe pivoting to rigid studs projecting' from the cheek-plates of the bail, and in the pivoting to the bail-arms, slight-1yv in. advance of their pivward ends of thelhandles, which are slightly bent to conform to the vshape of the scoop,

. and in combining therewith a cross-bar secured tov the handles, which cross-bar shall rest directly upon the top of the rear end of the scoop-body and extend along its entire width, for the purpose of holding it firmly in position, and a spring-hook secured to said cross-bar on its top face, for engagement with The frame-work of the scoop consists of stout a catch secured to the rear of the scoop bemetal bands A B G D, to which is attached, by bolts or other suitable means, a lining or body,

E, of some suitable light material, such as thin plate metal or Wood.

The bands A B O extend from the front to the rear of the scoop at each side edge of the bottom proper, and also at the center, thereby afibrding a firm support to the body and sustaining it against the pressure of the load of earth or other material therein.

The band D extends all around the top edge of the scoop body or lining, and is secured firmly thereto, so as to strengthen it at that part. The strain upon the body or lining is very slight compared to the strain upon the front or scraping portion, and it is found in practice that a great saving of material, and consequently a lessening of the expense in constructing machines of this character, is secured by forming the-lining of light and cheap material, with exterior bands of stout metal to support it, While such construction is, at the same time, quite as effective as in those instances where the scoop body or lining is made of stout and more expensive material. Moreover, should a scoop constructed entirely in one piece become damaged, it might be necessary to replace it entire, while in my construction the scoop-lining or any other portion can be readily replaced, should occasion require,

. withoutnecessitating the renewing of the other parts of the device. otal connection to the cheek-plates, of the:for-:

'F represents cheek-plates secured to the outside of each side of the scoop at its forward end.

These plates are preferably of stout metal, and are secured to the frame-work by bolts or otherwise. They serve the purpose of greatly strengthening that portion of the machine subject to the most strain-via, that part in direct con tact with the earth being scraped and they also afford a firm bearing for the attachnient of the bail and handles, as hereinaftor described, so that the whole strain shall be upon the portion of the scoop best adapted to receive it by reason of its re-enforred condition.

G represents the knife or scraper,which is split at its rear edge to receive the forward ends of the bands A B C, the front edge of the scoop body or lining, and the front ends of the cheekplates F. Thesplit edges ofthc scraper and the therein-inclosed ends of the lining, hands, and checks are then firmly bolted or otherwise secured together, and, with the side-cmbraring cheek-plates, result in thctbrmation of an exceptionally strong scraping and strain sustaining portion, which, as the various parts maybe arranged to be capable ofeasy removal. may be renewed without difiicnlty whenever required without disturbing the whole of the machine.

Projecting outwardly from each cheek'plate F are rigid pins a, to which the ends of the bail K are pivoted. The forward ends of the handles ll (which are slightly bent to adapt them to the shape of the scoop) are, in turn, pivoted to the bail-arms in advance of the pivotal connection of said bailarmsto the cheekplates. This arrangement materially aids in the dumping of the scoop at the proper moment, as, on the rear portion of the handles being raised to, say, an angle of about sixtyfive degrees, the ends of the bail-arms will press the front ends of the handles back, and thereby force the rear ends up and release the cross-bar from the rear of the scoop, while at the same time the scoop turns over, releasing itself automatically from a spring-hook on the crossbar. The bail has capacity for rising free of obstructions without aii'ecting the handles suflicieutly to release the cross-bar.

The cross-bar I is secured to the handles H. While the handles are in their normal position this cross-bar will rest upon the topof the rear portion of the scoopbody and along its entire Width and hold it tirmly down.

Secured to the upper face of the cross-bar l is a downwardlyde lending hook, h, which is held in position to engage with a catch, 0, on the rear of the scoop by means of a spring, (1, also secured to the upper face of the cross-bar, and engaging at its free end in a notch in the rear of said hook. Both the hook b and the catch 0 are beveled on their faces to facilitate engagement with each other.

In lieu of the hook I and the plate-springd to hold the same in position, I may use a hook of Spring-steel, such as is shown in Fig.4of the drawings. This hook has a lip, r, at its upper end, by means of which it is attached to the crossbar, the hooked portion depending downward for engagement with the catch on the rear of the scoop, as in the before-described arrangement.

The operation of the devices for the revolution of the scoop is as follows: The handles H being in a position of rest, with the springhook engaging the catch upon the back of the scoop, by raising the handles sufficiently to enable the scoop to till, the cross-bar on the handlesiscaused to pressheavily upon thercar end of the scoop, and thereby hold it in a perfectly rigid position. Continuing the elevation of the handles to an angle of about sixtyfive degrees to the hail, the handles are forced back so that thc cross-bar is pushed off the rear end of the scoop, and the scoop thereby permitted to pass clear of the cross-bar and deposit its load. It is then brought into position again by the combined movement of the horses forward and the pulling back of the workman upon the handles.

It will be observed that this device is simple in construction, with'no complicated parts to get out of gear or become clogged in use, with no projecting portions liable to be broken off, and the machine thereby deranged, and that it further possesses the advantages of being light in construction while very strong at the parts requiring strength, capacity of easy replacement of parts requiring renewing, and facility and reliability of operation.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,

1. A scoop consisting of the frame-work A B U D, of stout metal bands, and the lining or body E, of light material, substantially as described.

2. The cheek-plates F, secured at each side of the forward end of the scoop to the bands U I). as and for the purpose set forth.

3. The combination, with a scoop consisting of thc frame-work A B G D, lining E, and cheek-plates F, of the split knife or scraper G, substantially as and for the purpose set forth.

4. The combination of bail K, pivoted to the cheek-plates F, handles H, pivoted to said bail in advance of the pivotal connection of the bail to the cheek-plates, the cross-bar I, socured to said handles so as to rest directly upon the top 'edgeof the back part of the scoop, the catch 1), and the spring-hook c d, secured to the cross-bar, as and for the purpose set forth.

The combination of the catch b, secured to the rear of the scoop, the hook c, securedto the cross-bar I, and the plate-sprin g d, secured to the cross-bar, for engaging with the upper end of said hook and insuring the engagement of said hook and catch, as described.

In testimony whereof I aflix my signature in presence of two witnesses.

AHIJAH R. BYRKETT.

Witnesses:

Units. J. GOOOH,

inc. F. GRAHAM.

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