US1333816A

US1333816A - Scraper

Info

Publication number: US1333816A
Application number: US230573A
Authority: US
Inventors: Mossman Isaac
Original assignee: Individual
Current assignee: Individual
Priority date: 1918-04-24
Filing date: 1918-04-24
Publication date: 1920-03-16
Anticipated expiration: 1937-03-16

Description

I. MOSSMAN.

SCRAPER.

APPLICATION FILED APR.24. 191s.

Patented Mar. 16, 1920.

a 4 3 2 4 a a m a v I i? g Z 0 3m n w 5% l5 4 6 m w a 3 3 mn 6 2 7 ,0 3 2 4 2 n H La INVENTOR 9 440 Mass MAN 35 is a view in side elevation of a scraper con- ISAAC MOSSMAN, or'mcoma, wasnmeroivf semen.

To all whom it may concern:

Be it known that I, ISAAC Moss MAN, a

citizen of the United States, residing at Tacoma, in the county of Pierce and State of Washington, have invented a new and useful Improvement in Scrapers, of which the following is a specification. V

This invention relates to improvements scrapers of the class commonl used for moving earth in grading and filling, and the object of this improvement is to prov de a scraper of this class that is strong and simple in construction, eificient in operation and easy to handle.

A further and more specific object is to provide a scraper of this nature having a hinged bottom section that may be lowered by the operator for the purpose of filling the scra er.

A stil further object is to provide a guard plate on the front end of the scraper to prevent earth from .jolting off when the scraper is hauled for a considerable distance after filling. A still further object is to provide a scraper of this class having a hinged back portion through which the contents of the scraper may be discharged, the back portion serving as a leveling device to level the earth as it is dumped. v

The invention consists in the novel construction, adaptation and combination of parts of a scraper as will be more clearly hereinafter described and claimed.

In the accompanying drawings Figure 1 structed' in accordance with this invention; Fig. 2 is a plan view of the same; and Fig. 3 is a sectional view on

broken line

3, 3 of Fig. 2 showing certain parts in different operative positions.

Referring to the drawings, throughout which like reference numerals indicate like parts, the numeral 5 indicates the bottom of a scraper bowl that is provided with two

sides

6 and 7 and a back member 8. The

parts

5, 6, 7 and 8' are all formed integral or otherwise rigidly secured together so that they constitute a rigid frame to which the remaining parts of the scraper may be secured.

Articulated with the front edge of the bottom portion 5 by means of hinges 10 is a Specification of Letters Patent. "Patented Application filed April 24, 1918. Serial to. 280,673.

Mar; 16, 192a.

blade portion 11 that is provided on its opposite ends with integrally formed, upwardly directed members 12 and .13 that work just inside the two

sides

6 and 7 as more clearly shown in Fig.

The top ends of the members 12 and. 13 are articulated by' pivots 14 with

bars

15 and 16 that extend rearwardly and are pivotally connected with the top ends of

arms

17 and 18 that are fixedly secured to a rotatable shaft 20 that extends crosswise of the rear portion of the scraper.

The central portion of the shaft 20 is keyed or otherwise fixedly secured to a lever 21 that is movable over a quadrant 22 so that when the lever is in the lowered po-- sition shown in Fig. 1 the blade ortion 11 will be flush with the bottom of t e scraper but when the lever is raised the blade will be thrown downwardly into an .angular position as shown in Fig.3 so that when the scraper is moved forward the blade 11 will dig into the earth and cause the scraper to be filled. l

The front edge of the blade 11 may be provided with a plurality of outwardly projecting teeth 23 of well known form that assist it. in digging into. hard and rocky earth.

This scraper is preferably providedon both sides with runners 24 and-25 of the well known Fresno scraper type which are of substantially the shape shown in the accompanying drawings and have a plate 26 secured to the lower front portions thereof and extending upwardly substantially a distance equal to about onehalf the depth of the scraper. The plate 26 is .notched as at 27 to provide recesses for the teeth 23 and such plate serves to prevent the contents of the scraper from jolting off at the front end when the scraper is hauled. over rough ground after being filled. The upper portion of the

runners

24 and 25 are strengthened and braced by a cross bar 29.

Thescraper may be provided with a bail 28 of the usual form by which it may be hitched to a source of power and the opposite ends of the scraper are provided at the points shown with rigid cross bar 29 that engages with the bail 28 and serves as a too" far when it is dum'ped.

cured to the central portion of the bottom plate 5 of the scraper and may be used as an auxiliary; hitching point when the scraper is being used in hard ground. The front platel26 is necessarily slotted as-at 44 to admit the passage of the cable or rod that is secured to the lug 45.

That portion of the rear wall of the scraper below the cross member 8; and herein designated by the numeral 32 is rigidly connected at each of its upper corners with *

archedfinembeirs

33 and 34 that are pivoted .a lug 36 that isv connected to the upper portions of the scraper sides 6 v and? by pivots 35 in such manner that the portion 32. will swing outwardly without .digging into the ground as shown in Fig. 3

and the lower ed thereof will be lifted a slight distance 0 of the ground to permit the discharge of the contents of the scraper I and to serve tolevel and spread such contents out as it is discharged. The rear wall portion 32 is provided with b a link 37 with "alever '38- that is adjustahly. movable over a quadrant 40 and by which the swinging portion 32 may be moved into an open or a closed position.

In operation when the scraper is to be filled-the lever 21 is raised thereby throwing the front edge of the blade 11 downward as shown in Fig. 3-, and causing it to dig into the ground and fill the scraper. After the scraper is filled the lever 21 is moved down-'. ward and the blade 11 raised. The scraper may then be hauled to any desired dumping oint, the plate 26 preventing the material om 'jolting oil at the front side of the scraper. v 1

-When the scraper is to be emptied the lever 38 is lifted and the swinging'rear wall portion 32 is moved outwardly into the position shown in Fig. 3 thus permitting the material to discharge through the opening in the rear end of the scraper.

If it is desired to dump thescraper when on level ground, this may be done in the usual manner bylifting up om'the levers 21 and 38 and turning the scraper'over, the bail 28 engaging with the cross bar 29 and preventing the scraper from turning over far enough to cause the

levers

21 and 38 to strike the ground. 1 When it is desired to pull dirt up an incline or up to the edge of an incline, the bail 28 on which the pull is exerted will cause the lugs30 and 31 to come in contact with projections provided upon means at the dump and thus arrest the forward movement of the. scrapper and cause said scraper to tilt downwardly and automatically dump.

The scraper can then be returned to its normal position by tension haul-back line. Manifestly changes in the form of conapplied to the rigidly connected by edge of said bottom wall section and norstruction of the various parts of this scraper may be made within the scope of the follow- 7 in claims.

at I claim and desire to protect by Let ters Patent is 1. A scraper of the class described comprising a scraper bowl having two side walls bottom and rear walls, a scra er blade hinged to the front edge of-the bottom wall, means for adjusting t e blade to a position to facilitate filling o the bowl and means for discharging t e contents of'the bowl from the rear thereof.

2. A scraper of the class described comprising a bodyportion formed of two sides rigidly connected by back and bottom members a blade section hinged to the front edge of t e bottom section, a rearwardly swinging door mounted in the back section, means for regulating the an lar position of the blade to facilitate filling of the bowl and means for normally retaining the said door I with each other by bottom and rear wall sections, a scraper blade hinged; to the front mally formin a part of the scraper bottom, means for adjusting the angular position of said scraper blade, runners on each side of said scraper-bowl and projecting in front of and above said bowl and a plate extending between said runners and co-acting with said hinged blade to prevent thespilling of mater1al.

4. A scraper comprising a bowl having two side Walls that are rigidly. connecte With each other by bottom and} rear wall sections, a scraper blade hinged to the front edge of said bottom wall section and normally forming a part ofthe scraper bottom, integral arms projecting upwardly on opposite ends of said scraper blade in close proximity to the ends of said scraper bowl, links pivotally connected at their forward ends -with the upper ends of said arms, a shaft rotatably mounted in the rear portion of said scraper, arms fixedly secured to said shaft the upper ends of said arms being .pivotally connected with the rear ends of said links, a lever for rotating said shaft raise and lower the cutting edge of said scraper blade, runners on each slde of said scraper bowl and projecting in front of and above said bowl, and a plate extending betweensaid runners and co-acting with said adjustable blade to prevent spilling -of 125 material.

.5, The combination with! a scraper bowl having two sides that are rigidly connected with each other b a bottom wall section and a back'wall sectlon that extends crosswise 130 as v between the two uppermost rear corner por= tions of said side Walls, of a swinging rear end section, arms secured to the upper edge of said rear end section and pivotally connected with the ends o fj said scraper bowl at a point in front ofiaid rear end seotion, and a lever for moving said rear end section rearwardly about its pivot to dump said scraper, the lower edge of said rear end section serving to level the material discharged 10 from said scraper.

Signed by 'me at Tacoma, Washington, this 6th day of April, 1918.

ISAAC MOSSMAN.

Witnesses:

R. J. CooK, D. O. KUHNB.