US661242A - Elevator-boot. - Google Patents

Description

m. 66!,242. Patented Nov. 6, I900. H. .1. FLOOD.

ELEVATOR BOUT.

(Application filed Jan. 24, 1900.)

(Mo Medal.) z Shasta-Sheet l.

Nu. 56!,242. Patented Nov. 6, I900.

H J FLUUD ELEVATOR BOOT.

(Application filed Jan. 24, 1900. I (No Model.) 2 Sheets-SE90! 2.

; Unwrap STATES PATENT rules.

BOYD Cb WlH'lE COMPANY, OF ILLINOIS.

ELEVATOR-BOOT.

SPECIFICATION forming part of Letters Patent 0. 661,242, dated November 6, 1900. "A lication fil d January 24, 1900. Serial No. 2,616. (No model.)

To all whom it may concern.-

Be it known that I, HARRY J. FLOOD, a citizen of the United States, residing in the city of Chicago, county of Cook, and State of Illiuois have invented a new and useful Improvement in Elevator-Boots, of which the following is a specification.

My invention relates to elevator-boots of the type used in connection with mechanism for hoisting and conveying grain and various materials employed in the industrial arts.

As usually constructed heretofore,the outer framework or casing of the boot is slotted to permit the adjustment of the pulley and pulley-shaft, and a portion of the material to be elevated escapes through the slots in said casing, either passing entirely outof the boot or in some constructions being collected in an outer hood or receptacle. In the latter case said material comes into contact with the shaft-boxes, causing great annoyance and also danger if said material is inflammable.

The object of my invention is to provide means whereby the side slots may be closed at all times and in all positions of the shaft, thereby preventing said material from escaping or coming into contact with the shaftbearings. I attain this object by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a view in end elevation of an elevator-boot embodying myinvention. Onehalf of said boot is shown in vertical section taken through the axis of the pulley-shaft. Fig. 2 is a view of the boot in side elevation, one-half being shown in section taken on a vertical plane located between the boot-pulley and the portion of thecasing nearest the observer. Fig. 3 is a plan view of a take-up box wherein the shaft is jdurnaled and also shows in horizontal section the take-up frame and sliding cover. Fig. 4 is a face view of a portion of one of the sliding covers and shows the relative positions of the shaft and the ring, whereby said cover is supported upon the takcnn boxes.

Sim ilar letters refer to si milar parts through out the several views.

The outer casing 11 a constitutes the main framework of the boot and is provided with hin ed door-a b b for af ording access to the upper extremities.

preferably elongated box-like metallic cast ley and shaft within said casing,and toallow for this adjustment said casing is provided with the slots wherethrough said shaft projects. Said shaft e is journaled in the takeup boxes 7t h and is secured'in its proper position therein by means of the set-collars t Saidboxes 72 7a. lie without and on opposite sides of the casing a and are supported and adjusted by means of the take-11p scre /sjj. The connectionbetween said boxes and take-, up screws is efiected by means of the collars it it, which are securely attached to the lower extremities of said screws j and are iuunov-' able longitudinally thereon. Said collars k bear againstthe lower surface of the arches or crossbars m m, which latter are formed upon-said take-up boxes above the journalbearings therein and constitute an integral part of said boxes, Said bars m are apertured, so as to afford a free passage for the take-up screws j, but engage and bear upon the said collars It on said screws. Said boxes h are held in position and are guided in their travel during adjustment by the grooves or rabbets n 72,-for1ned in the lateral edges-of said boxes, said groovesreceiving the tongues 0r flanges 0 0 of the take-up frames 1; 1), as shown in detail in Fig. 3 of the drawings.

The adjusting or take-up screwsjj, above mentioned, support the boxes h hand consist .of threaded rods or shafts of a length somewhat greaterihan the distance througlrwhich the pulley L1 is adjustable. termine the position of the boxes h it within the take-up frames 1) p and-are operated by means'of the hand-wheels q q, secured to their Said takeup frames are ings having two opposite sides thereof open to permit the adjustment of the shaft 1;. Said frames n are provided with the laterally-projecting flanges 1- 'r, by means whereof said Said screws deframes are bolted or aflixed .to the boot-cas ing a. The location of said take-up frames is such'that the 'open sides thereof are-in juxtaposition to the slots gin said casing, and. the width of said frames orth'e distance between the parallel sides's .9 thereof is sufficient to receive both the shaft 0 and th'e take-u p boxes h h, wherein said shaftis journaled. v

. The lugs or bosses t t constitute an integral portion of the frames p 10 and extend-between the sides 1 1' of the latter at-the, upper extremities. thereof. I Said bosses form the supports for the take-up screws jj and are apertured, so as to receive the same without com-v are ofa thickness slightly greater than the thickness of the sliding covers .Said

strips extend alongthe lateral edges'of said frames, and, in conjunctiouwith said casing and frames, constitute guides wherein said covers -may travel." Said covers a; a; consist of plates, preferably of metal, and aresome what wider than they slots 9 in the boot-caseeive the shaft 0 and closely approach the same Without making contact therewith, as, shown in Fig.4, thereby permitting the free rotation of-said shaft and yet-preventing the passage of material ineither direction through I of the' material within the boot-casing can proper position relatively to said shaft 0 by.

ing: a. Said covers are so apertured as to resaid covers Herein lies an important feature of my invention, for by this construction none escape therefrom nor gain access to any part of the. shaft bearin Moreover, every part of the take-up or adjusting mechanism is whollyoutside of the boot-casinga and'maytherefore be easily-keptin suitable working:

condition Ihe covers a;

a: are maintained in th-eir means of the annular collars 'y,.,which are lscrewed or otherwise fastened to said covers and encircle and have a bearing upon the take-11p boxes h h. Said covers a; :1; therefore move withsaid'shaft and take-up boxes when I the bootpulley d'is being adjusted. The

' when' s'aid pulley is at the highest pointoflength of said coversis such as to extend to the upper extremity of the casing-slot 9 when thepulley d is at' its lowest point of adjustment and to the lower extremity of said slot its adjustment; Said slot g is therefore completely closed in all positions 'of' said pulleyy What I-claim as new, and desire 130.5901116 by Letters'Patent, isi v 1. In an elevatorboot having slots in the boot-casing, and a pulley-shaft vertically adjustable therein, slot-covers consisti'ngof plates vertically adjustable with the boot shaft; said covers extending substantially the entire length'of said slots for all positions 1 of said shaft; and said covers forming-individ ual parts of said boot separate from said shaft, and parts for supporting and adjusting said shaft.

2. In an elevator-boot, the combination'of a slotted boot-casing, a pulley-shaft extends ing throu'ghthe slots of said casing, verti- (Bally-adjustable boxes for supporting said shaft, and covers adjacent to said casing and extending across the slots therein, said covers being separate from and supported by said boxes.

- 3. In an elevator-boot, the combination of a slotted boot-casing, a' pulley-shaft extending through the slots in said casing, verti callyadjustable boxes for-supporting said shaft, covers for closing the casing-slots, said covers being separate from and'supported by said boxes, and frames rigidly secured tothe 1' sides-of said casing at the said slots. therein,-

said frames serving'as guides for said covers, and afiording'means for adj ustably supporting said boxes and-covers.

4:. In an elevator-boot, a casing havingslots for permitting the vertical adjustment ofthe pulley-shaft, boxes for supporting said'shaft, slot-covers adjacent to the outside of said casing, said covers having apertures of a diameter substantiallyequal to the diameter of said boot-shaft for permitting the passageof said shaft, and means for supporting said covers free from said shaft in a posit-ion between saidcasingand said's haft-boxes.

-5. In an elevator boot, a easingslotted to permit the adjustment of the. boot ---shaft,

boxes for supporting said shaft,-and slot-cowers lying between said casing and saidboxes,

said cove-rs closely encircling said shaft and thereby preventing .the access 'of material from within saidcasing to said boxes; and rings or collars secured to said covers and resting-upon said boxes,'th'ere by supporting 'saidlcovers upon said-boxes.-

6. In an elevator-b ot, the combination of- ,a slotted casing; frames forming separate in;

dividnal parts of said boot and beingrigidly secured to the outside offisaid casing-at the slotsthere'ingslot-covers heldin proximity to said casing by-said frames, said covers eonstituting individual parts of said casing;- and vertically-adjustable shaft-boxes located out- 'si'deof said casing and covers, and forming supports for said covers; and means for adjustably suspending said boxes in said frames. v7. In an elevator-boot, the combinationof -a slotted-boot-casing, a pulley-shaft, covers for elosingithecasing-slots said covers form- .ing individual parts of said boot, boxes for supporting said shaft in said covers, said,

boxes havingarches or cross-bars formed thereon which are apertured to afford a pas sage for take-up screws, takeup frames rigidly secured to the sides of said casing, said frames having bosses suitably apertured to afford a passage for said screws, said bosses being chambered to receive and prevent. the rotation ofnuts upon-said screws, and takeup screws as aforesaid, having, "collars an or near their lower extremities for supporting the arches or cross portions of said boxes,

"said screws extending upward through said apertured bosses, and being adapted to be IO supported thereon by means of nuts, one nut, being located above the boss, and tihe second nut lying within the chamber thereof, and being thereby prevented from rotating.

- i HARRY .l. FLOOD. W-i tnesses W. ll. WA'rKINs, II. E. CRANKsuAw.

Images