US1989818A - Excavating implement door - Google Patents

Description

J. P. MURTAUGH EXCAVATING IMPLEMENT DOOR 2 sheets-sheet 1 FiledJan. 5, 1934 Feb., 5, i935.

Feb. 5, i935. J, P. MURTAUGH EXCAVATING IMPLEMENT DOOR Filed Jan. 5, 1954 2 Sheets-Sheet 2 Patented Feb. 5, 1935 UNITED' .S'Ifl'lllv PATENT OFFICE EXCAVATING IMPLEMENT DOOR Joseph P; Murtaugh, Chicago Heights, Ill., as signor to American Manganese Steel Company, Glneago Heights, Ill., a corporation or Meine Aliplieation January 5,. 1934, Serio! NoE 705,313 22 claims. (01.2149145) The invention relates to excavating imple- Figure l is a topplan view of the bottom pormentsi suoli as newer actuated shovels, clippers tion oi avknown type .of excavating .dinner havor the like, provided with doors through which ing. the door of the present invention applied. material gathered by the implement may be disthereto.

charged et voluntarily determined points; and .Figure 2 is en elevational view of the outside of particularly doors ertieulated with suon implethe doofinents in a manner to permit opening and closing Figures 3 and 4, are longitudinal sections teken,

by ninging eotion, respectively, on the lines Sirf-3i' and 4dr-A2: of

in the development of clippers oi larger capacity, Figure 2.- l some o which are cgpetble of gothering, convey- Figure 51S a Side elevation of the rear portion l0 ins and discharging as mush as iifteen or more of the implement and its door, as viewed from cubic yards of materiel att a, single operation of the left 0f FlgilieS l and 2.; and

the implement, the hllgirlg doors are required to Fglli'eS 6 and 7 .are transverse Sections taken, withstand not only large stresses resulting from leslleotlvelmon the lines Gemor and 7r-.-7:c ofV A loads directly imposed thereon, but severe shocks Figure 2 i 15 due to impact against materials being handled and -l represents e Portion of the body of en eXoo door designs heretofore resorted to in meeting vating implement, for instance, a dinner, oonlihee Conditions, have involved undesliaibly large Strueted with a. known arrangement of bearings weight of metal and ompiieetion of. structure. 2 for the usuel .dinner stiel: (not shown) and beerlt .is en object of the present invention to proings 3 for pintles 4 (dotted lines in Figure l) zo vide a hinging door for exoavating implements through means .oi which to articulate with the which will be veri' light tempered with loads .and dinner the hinges 5 of a door 6, physieal forces which it is required to stand, and Door 6, aooording to the present inventiomis at the saine time be veryrigid and sturdy in conf designed as an integral casting composed of web struction, es well as. relatively cheap to produite portions and integral beam framing; the web 25 by foundry methods. portions being subdivided according to the disrlhe invention proceeds upon the. principle of position of the beam members which constitute cons lllletlrlg the door of integrally related, web-f the framing, for instance, the web portions 7, 8, like, well-forming portions together with fram.- 9, 1.0, 11 and l12, with or without reinforcing maring beams, the framing besms being primarily gina-1 portions 1-3, 1.4, 15 and lo and marginal so related in the structure as the grins of hinges brackets 17 if desl'ed- The framing comprises end terminating in ends constructed for articulate hollow beams i8 which are positioned as the ing the door with the body Q the implement; there arms of hingesand transmit the load o f the door, being else, preferably, other beams related to the after the menue? of hinges, to their enf-ls 19 oon- 35. hinge erin beams in the nature of oross beams or struotecl .for articulation through means of the transorns- Preferably, also, the several beams Pllliles l Wtll the hinge bearings 3 on the body are united with the web portions in planes inter,- of the implement; 3.150, hDllOW CI'OSS beams 01 mediate ofthe planes oi the outer and inner walls transom 20, 21, extending integrally between of the hollow beams, so that the inner walls of the hinge arm beams 1B in a manner to develop 'l0 atleast the .hinge erm. beams, and preferably any with. the'letter e relatively light but very Strong 40 begin or beams parallel. therewith, while provid- ,flemme for the door; and, preferably also, e ing portions oi the inner surfsoe of the door, will iol-dille boem 22 .Parallel with the beams 18 end be related to the web portions as corrugations integrallyA intersecting the beams 20, 21, aS a fill'- wliicn will not interfere with the loading or dis# ther element of reinforced framing and eonvencharge of the implement. iently available as a, housing for a. dipper latch 45 Another object of theinvention is Vto utilize cerbOlt 23 and its anti-friction bearings 23a, 23h, tuin of the hollow beams as a mounting forthe WhQh bolli it holds ill DOStiOIl t0 Godet with the door lotoh; to which end, the preferred embodis lellih keeper 24 (as ShOWIl. lll Figures 3 to' 5).

ment of the invention includes an intermediate AS ,further ShOWIl in these gllreS, the bottom hollow beam parallel with the hinge arm beams, reinforce rim 15 may be strengthened opposite 50 intersecting the transom beams and providing. bolt 23 by means of gusset or bracket 25. housing for the latch and its heoringsE f As shown in Figures 6 and '7, the inner Walls in the aceomoanying drawings, in Whieh .the 18a .of the hinge erm` beams 18 and the inner preferred embodiment of` .the invention .is shown Wall .22a of the latch housing beam 22 constitute 5.5. by way of i.llu.stn.ltion--v eorrusetions on the inner surface of the door and 65 together with inner surfaces of the several webs constitute the inner surface of the door; in other words, the several web portions integraily unite with the framing beams 18 and 22 in a plane intermediate of the planes of the inner and outer walls of these particular beams= Said web portions, however, constitute the inner walis of the hollow trfansomsy 2Q and 21 in order that there may be no transverse obstruction on the inner surface of the door to retard movement of the material in dumping.

The hollow framing beam 22, which integrally intersects the transom beams 20, 21A and provides the housing for the latch bolt 23, hasthose of its s walls which lie on the outer side of the plane of the web portions terminated intermediately of the height of the door; but its inner wall 22a, which provides a vertical stifening corrugation on the inner surface of the door, continuesupwardly therebeyond, as shown in Figures 2 and/i. Latch bolt. 23 is merely typical of any suitable known constructionof device of that kind and Y will, of course, in practicebe equipped in a known manner for voluntary control. I

rAs shown in Figures 3 to 5, the pintle or point of articulation 4 is oiset a substantial distance inwardly fromthe door for the'known purpose of more advantageously disposing of the door in its swinging movements; but according to the present inventiomthe hinge arm beams, together withtheir inner walls which provide the corrugations on the inner Vsurface of the door, are deected inwardly from points materially below the upper end of the door, which maintains the advantage of the offset pintle with very much less prominencer of the upper end of the hinge arm; and in order to accommodate inwardly deected portieri,l the body of the implement to which the door is applied is recessed at 26 (Figures 1 and 3) A door embodyingthe structural principle here'- in described and designed appropriately for a given capacity of excavating implement, can be ,y made with approximatelyOU/ less weight of metal than a `door of like capacity embodying principles of construction relied upon prior to the present invention.

What is claimed is:

1. In excavating implements, in integral door structure comprising vweb portions and hollow framiner beams; said beams being positioned in said doorstructure in hinge arm relation to the door and having their ends constructed for hinge connection with an implement upon which the door is to be mounted, said hinge arm beams near their articulating ends, but below the upper end of the door, being deectedinwardly beyond the inner surface ofthe door. y, i f

2. 'In excavating implements, an integral door structure vcomprising web portions and hollow framing beams; said beams being positioned in said structure to provide hinge arms and transoms; and the beams which provide said hinge arms being constructed at their ends for articulation with the body of an impiement which the door is to serve. n

3..A hinged door foiexcavating implements, comprising hollow framing beams and web portions merging integrallyr with said beams; said beams being positioned in the rdoor to provide hinge arms therefor and vhaving spaced inner and outer walls; and said web .portions meeting side walls of the beams in `a plane intermediate of the planes of the inner and outer walls of the beams, whereby the irmer walls kof the beamsk constitute 6. A door asv described in claim 1, which also embodies in 'construction a hollow framing beam intermediate of and substantially parallel with the hinge armf-beam.

7. A door-as described inclaim 1, which also ,embodies in itsconstruction a hollow framing beam intermediate of the hinge arm beams and constructed "to provideY a latch bolt housing for the door.

s. A door as described in daim 1,v wnic isiso i constructed with an intermediate hollow kframing beam substantially parallel with the hinge -arm beams'and having its inner wall forme'das a cor'- rugation4 in the inner surface of the door.

9; A door as describedin claim 1 ,fwhi'chis also constructed with an intermediate hollow framing' beam substantially `parallel with the hingel arm beams and having its inner wail formedas alcorrugation in the inner 'surface ofthe door; the outer wall of said intermediate beam terminating intermediately of the vertical dimension of ther door, withits inner wall being continued beyond said termination as a continuation ofthe corru-l gation on the inner surfaceof the door.` Y 10. A door as described inclaim 3 inwhich the hinge arm beams, togetherwith their innerV lcorrur-v gation-iforming walls, aredeected at points be-4 t low the upper end rof'thedoor inwardly beyond the inner surface of the door in determining the location of their points `of articulation with an implement upon which the door is to serve.

y1,1. Iny combination, an excavating implementr bodyhaving door articulating bearings, and a hinge-:l door therefor comprising hollow framing beams and web portions merging integrally with said beams, the beams being positionedY in the door structure as hingearms and includinginner walls positioned. as corrugations in the inner sur-I face 'of the ydoor and outer walls rspa-ced therefrom; said hinge arm beams having projecting ends eonstructedforarticulation with the implement body and being deilected 'from' points short of the hinging end of the doorinwardlf-,f to artcu lating bearings upon said body; and said body being recessed to admit the inwardly rdeilected portions.

12. In excavating implements; an'integral door structure comprising web portions 'and' hollow framing beams, said 'beams being positioned in said door structure and having their inner walls formedas corrugations on theinner surface 'of f the door, said door structure having integral hinge extensions for hinge connection with the imple-` mentupon which r.the door is `to bejmounted.

A13.A hinged dipper doorv comprising a body portion, reinorcingfbeams integrally cast with said body portion, said' :beams forming hinge arms projecting beyond said body portion` and said lbody portion', having reinforcing corrugations formed on the inner surface thereof extending parallel to saidhinge armbeamsfwhereby said corrugations l permit free discharger of material kcarried by said door as the door is swung' to openp'osition with respect to the dipper upon which it is mounted.

14. In an excavating bucket, an integral door structure comprising, web portions and hinge arm beams, said beams being positioned in said door structure in hinge arm relation to the door and having their ends constructed for hinge connection with the bucket upon which the door is to be mounted, the inner walls of said hinge arm beams being formed as corrugations on the ixmer surface of the door.

15. In an excavating bucket, an integral door structure comprising, web portions and hinge arm beams, said beams being positioned in said door structure in hinge arm relation to the door and having their ends constructed for hinge connection with the bucket upon which the door is to be mounted, the inner walls of said hinge arm beams being formed as corrugations on the inner lsurface of the door, said corrugations increasing in height towards the hinge edge of the door. Y

16. In an excavating bucket, an integral door structure comprising, web portions and hinge arm beams, said beams being positioned in said door structure in hinge arm relation to the door and having their ends constructed for hinge connection with the bucket upon which the door is to be mounted and an intermediate hollow framing beam substantially parallel with the hinge arm beams and having its inner wall formed as a corrugation on the inner surface of the door.

17. In an excavating bucket, an integral door structure comprising, web portions and hinge arm beams, said beams being positioned in said door structure in hinge arm relation to the door and having their ends constructed for hinge connection with the bucket upon which the door is to be mounted and an intermediate hollow framing beam substantially parallel with the hinge arm beams, having its inner wall formed as a corrugation on the inner surface of the door and its outer wall terminating substantially midway of the door, said inner wall being continued beyond said termination as a continuation of the corrugation on the inner surface of the door.

18. In an excavating bucket, an integral door structure comprising, web portions and hinge arm beams, said beams being positioned in said door structure in hinge arm relation to the door and having their ends constructed for hinge connection with the bucket upon which the door is to be mounted, said hinge arm beams, near their hinge ends but forwardy of the rear edge of the door, being deected inwardly beyond the inner surface of the door.

having door articulating bearings and a hinged door structure therefor comprising, framing beams and web portions merging integrally with the beams, the beams being positioned in the door structure `as hinge arms, said hinge arm beams having projecting ends constructed for articulation with the bearings on the bucket body, said beams being deected from points short of the hinge edge of the door inwardly towards the articulating bearings upon said bucket body and said bucket body being recessed to admit the inwardly deected portions of the hinge arm beams.

20. In van excavating bucket an integral door structure comprising, web portions and intersecting hollow framing beams, certain of said beams being positioned in said door structure in hinge arm relation to the door and having curved ends extending beyond the web portions of said door for hinge connection with the bucket upon which the door is to be mounted and other of said beams extending transversely with respect to said hinge arm beams, tying together said hinge arm beams for reinforcement of said door structure.

21. In combination, an excavating dipper bucket having a bottom opening through which material may be dumped, hinge brackets on the back of said bucket offset from the plane of said opening, a door hingedly mounted on said bucket by means of said hinge brackets, said door having integral hinge arms which curve inwardly at their ends with respect to the rear edge of the main body of the door for articulation with said hinge brackets, whereby portions of said curved ends lie Within the bucket when the door is in closed position, the back of the bucket having recesses to receive said curved ends.

22. An integral dipper door structure adapted to be hingedly mounted on an excavating bucket comprising, a body portion, hollow hinge arm beams integral with and reinforcing said body portion and extending beyond said body portion to provide curved hinge arm extensions, a hollow framing beam constituting a latch bolt housing integral with said main body parallel to but intermediate said hinge arm beams, a pair of hollow transom beams extending from said latch bolt housing beam and merging integrally at their ends with said hinge arm beams, a marginal reinforcing rib extending around the main body of said door and integral gusset portions between said hinge arm beams and the marginal rib, said gusset portions lying substantially in line with the transom beams for reinforcement of the door structure.

JOSEPH P. MURTAUGH.

19. In combination, an excavating bucket body

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