US396136A

US396136A - Conveying-belt

Info

Publication number: US396136A
Authority: US
Publication date: 1889-01-15
Anticipated expiration: 1906-01-15

Description

(No Model.) 4 Sheets-Sheet 1.

D. BRENNAN, Jr.

GONVEYINGIBELT.

Patented Jan. 15, 1889.

ATTORNEYSE 4 Sheets-Sheet 2.

(No Model.)

- D. BRENNAN, Jr.-

CONVEYING BBLT.

No. 396,1 36. Patented Jan. 15, 1889..

WITNESSES: I mvsmon: 7 6% K 7 4625M BY ATTORNEYS.

M PETERS. Hnlo-UI G P W Wnhlnglnn. D, C.

(No Model.) 4 Sheets-Sheet 3. D. BRENNAN, Jr.

CONVEYING BELT. N0. 396,136,. Patented Jan} 15, I889.

vfimssns: V INVENTOR: A

BY .Mu/m g ATTORNEYS.

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(No Model.) 4 Sheets-Sheet 4.

D. BRBNNAN,J1.

, CONVEYING BELT. No. 396,136. Patented Jan. 15, 1889.

WIfNESSESL' IIVVENTOR:

Arron/ms.

N. PETERS. Pholo-Lillwgraphcn wuhi c.

NITED STATES ATENT CONVEYING-BELT.

SPECIFICATION forming part of Letters Patent No. 396,136, dated January 15, 1889.

Application filed J auuary 6, 1888. Serial No. 259,942. (No model.)

To all whom, it nmy concern;

Be it known that I, DANIEL BRENNAN, Jr., of Salt-ersville, in the county of Hudson and State of New Jersey, have invented a new and Improved Conveying, Elevating, and Driving Belt, of which the following is a full, clear, and exact description.

Conveyer-belts, working horizontally or on slight inclines, when the materials to be handled are too destructive of the material of which the belts are made, are usually covered with metallic plates to prevent excessive wear; and, in order that a greater capacity for a like width may be secured, such belts have been covered with plates or pans having sides formed thereon. with projecting flights or ledges and pans or buckets with transverse ends or bottoms as well as sides have been attached to the belts to keep the materialfrom slipping back. In vertical elevators buckets of various forms are fastened to the belts. The plates, pans, buckets, &c., are also frequently secured to chains.

Belt-conveyers are found to be defective by reason of the fact that some of the conveyed material will work in between the plates, pans or buckets, and the surface of the belts, greatly injuring the same, and also by reason of their general lack of durability. In chain conveyers the wear and friction of the numerous joints under tension, especially in working gritty substances, is found to be excessive, and the chains are also liable to sudden rupture.

The object of my invention is to provide endless conveyers and elevators of simple and durable construction free from such defects; and a further object and result of my invention is to increase and make more available the transmissive power of endless ropes.

My invention consists of a pair of endless ropes covered, connected, and held apart throughout by an endless series of narrow metallic bars or wires securely looped over and upon them, so as to form an endless belt that will hold and convey materials and transmit power, and which is capable of being driven by ordinary maohine-pulleys; an dit also consists in making the cross-bars and attachments of such shapes as will form sides, flights, buckets, &c., upon the belt to adapt it for On steep inclines plates working horizontally, vertically, or at any required angle, as hereinafter fully described.

The exact form or shape of the connecting bars and their loops, extensions, and attachments may be of almost endless variety; but in order that my invention may be thoroughly understood I append a full description of the best types and forms thereof now known to me.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar figures of reference indicate corresponding parts in all the views.

Figure 1 is a view of a short piece of belt of my invention, showing the ropes in section, covered, connected, and held apart by wires looped over the same. Fig. 2 is a sectional View taken on line a: a" of Fig. 1. Fig. 3 is a view similar to Fig. 1, amodified form of belt, however, being represented, the wires in this case being replaced by narrow flat strips. Fig. 4 is a cross-sectional view taken on line w w of Fig. 3. Fig. 5 is a view of a section of the belt, the wires forming the cross-bars eX- tending beyond the loops and being turned upward and outward to form sides, whereby the belt will have a greater capacity for a like width. Fig. 6 is a sectional view on line so at of Fig. 5. Fig. 7 is a view similar to Fig. 5, except that flat strips are substituted for the wires shown in Fig. 5. 8 is a cross-sectional view on line a: 00 of Fig. 7. Fig. 9 is a view of a portion of abelt representinga construction wherein at certain distances some of the loops are made shorter than others, so that flat bars formed with upturned lips may be slipped between the bodies of the bars and the ends of the shortened loops, these ledges or lips being employed when material is to be conveyed up an incline. Fig. 10 is a cross sectional view on line :0 a: of Fig. 9. Fig. 11 is a view similar to Fig. 9, exceptt-hat the ends of the bars are bent over, up, and outward to form sides, and the lip, ledge, or flight is deeper than in the construction shown in Fig. 9. Fig. 12 is a cross-sectional view on line at of Fig.1]. Fig. 13 is aview representing a construction similar to that shown in Fig. 11, except that the upturned lip forms a bucket. Fig. 1% is a cross-sectional view taken on line so a: of Fig. 13. Fig. 15' is a view of a section of a belt wherein the cross bars or wires are formed from malleable iron. Fig. 1G is a cross-sectional view on line a: u of Fig. 15. Fig. 17 is a view of a construction wherein the cross-bars are formed from malleable iron, and wherein there are upper extensions and lower extensions. Fig. 18 is a cross-sectional view on line :1: :r of Fig. 17. Fig. 1.9 is a view of a modified construction wherein the extensions project at right angles from the main. portions of the strips. Fig. 20 is a cross-sectional view on line .1) .r of Fig. 1.9. Fig. 21 is a view representing the belt as being provided with buckets formed of malleable iron. Fig. 22 is a cross-secthose of a like type can be cut t'rom strips of wire or metal. and their loops formed and bent over the ropes 10 in various ways well known to mechanics. The bars can also be cast olt malleable iron or the like, and Figs. 15 and 16 show a convenient form of the same. The ledges or flights can be cast on some of the bars, as shown at 17.

Fi 17 and Sshowcast bars forming, with the ropes, a belt having high and flaring sides. Some bars having ledges, as 1.7, east on them are inserted to hold the materials on inclines. lI)ownward projections on some of the bars,

i as 18, will keep the belts running true withis a perspective view of a complete belt and that are connected and spaced throughout 1 their length by narrow metallic strips, bars, or wires 11, said bars, strips or wires being t'orined with loops 1 2, whichv overlap the ropes, the bars being placed side by side throughout the length of the rope, as is clearly shown.

In Figs. 1 and 2 1 illustrate the ropes as they appear when connected by looped wires, and this type I consider the best for the transmission ot power, as will be hereinafter explained.

Figs. 3 and 1 represent a construction simi lar to the construction shown in Figs. 1 and .3, except that in place of wires narrow flat bars are employed.

Figs. 5 and 6 represent-a construction wherein the wires forming the cross-bars are extended beyond the loops and. turned upward and outward to form sides 13, whereby the capacity of the belt will be greatly increased.

Figs. 7 and 8 represent a construction similar to that shown in Figs. 5 and (3, except that narrow flat bars are substituted for the wires.

In Figs. ll and 10 there is shown a construetion wherein the loops 1:? 0t certain of the bars 11 are made shorter than the others, so that fiat bars 14 can be inserted and held thereunder, these bars being preferably formed with upturned lips 15, the bars constituting ledges or flights which enable the belt to convey materials up inclines.

Figs. 11 and 12 represent a eonstructimi similar to the one last described, except that the bars 11. are formed with upturned ends, as in the construction illustrated in Figs. 7 and 8, and the lip 15 is made deeper than the one shown in Figs. 9 and 10.

cross bars or strips 1.1 above described and out the aid of flanges on the pulleys or of guide-rollers it' so preferred.

\Vheuever conveyer-belts are needed with a plain surface from whichv the material can be easily removed at any required point, coustructions of the types shown in Figs. 1 and. b may be used in reversed position, and the side ridges formed by the ropes and loops will keep the belts on the pulleys. The construction shown in Fig. 15 might also be used as just described, it the ledges 17 were not employed.

Figs. 1.) and 20 show cast: bars forming, with the ropes, a belt having high vertical sides. Jars having flights or partitions, as 19, castintegrally therewith can be inserted at intervals when it is required to work the belt on steep inclines. The parts of the bars forming the loops are shown tapering, which construction can be used in allv styles of the bars whenever the loops would otherwise be unnecessarily stilt.

Figs. 21 and 22 show a bucket, 20,1?01. elevating materials east fast to two of the bars forming the belt. The material cannot work under these buckets either in taking up or discharging. The pulley sides of the bars are made slightly convex in section, so that they may come in contact with the pulleys centrally when going around them. The space under the buckets is to allow the bars therein. and the ropes to conform to the curve of the pulleys.

In order to preserve the pliability of the ropes and resulting belt, I make the bars in all the constructions quite narrow; but their breadth can be, in a measure, proportionate to the diameter of the ropes and. pulleys. As the bars mutually support and keep each other in place, their grip upon theropes need. never be so tight as to prevent the natural bendiu and twisting ot the strands and lilaments while working; but to further insure pliability in constructions where fiat bars are used and the belt to work around pulleys of small diameter, I make the insides of the loops slightly convex in section, as shown in Fig. 22, so that the ropes may not be held rigidly to a straight line for any part of their length, and all loops might be made in this form.

The parts of the bars forming the sides oi. the belts will extend radially and have wedge shaped spaces between them when going around the pulleys; but this is seldom found objectionable, as the finest of the materials while being conveyed settles to the bottom, where the openings thus made are scarcely perceptible and the centrifugal action holds the material to a straight path. The parts of the barsforming the sides of the conveyors may be made slightly tapering, as at 2], Fig. 20, so that the upper part of the endless belt may have perfect freedom to sag between supports, if so desired.

In the manufacture of the belts I prefer that the ropes should be well. stretched by running them for a time over pulleys under strong tension before the bars are looped on but whenever the ropes stretch from use additional bars can be inserted and thus always kept in. sufficiently close contact with each other.

The use of endless ropes for driving machinery has heretofore been greatly restricted by reason of their want of width or surface for frictional contact with pulleys, and many kinds of grooved wheels and wheels having indentations to engage attachments upon the ropes have been devised to overcome this defect. In my invention the ropes are supplied by means of the cross-bars with an.

amount of frictional contact proportionate to their strength, and the additional weight also thereby supplied renders them suitable for shortand eoniparatively-slow transi'nissions, for which ropes have not heretofore been well adapted.

For driving purposes I prefer the belts made of the type shown in Figs. 1 and 2, with cross-wires of comparatively small diameter and of such a temper that the loops will have an elastic grip upon the ropes. The slight variation from being in line with each other, which naturally occurs in making the loops, causes the bars to form, when in contact, a

' surface slightly elastic lengthwise as well as transversely to the belt, which is of value in preventing shock and is an aid to durability and effectiveness. Either side of the belt can be used next the pulleys and the cross-bars will conform to the surface of pulleys with crowned faces.

I am aware that rin both open and closed have heretofore been used to cover single cables and ropes for the purpose of holding the strands of the same together and for pre venting wear, and that stops and flights have before now been attached to single and to pairs of endless ropes, so that they may engage indentations of wheels and so that the ropes may be engaged by grips used for traction purposes.

Having I thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A belt consisting of a series of metallic strips having end loops strung side by side upon a pair of ropes, substantially as shown and described.

2. The combination, in a belt, of endless ropes and a series of metallic strips having end loops and arranged side by side throughout the length of the belt and having a plain inner or contact surface, substantially as shown and described.

3. The combination, in a belt, of a pair of endless ropes connected and held apart by flexible metallic transverse strips arranged side by side throughout the length of the belt and having looped ends encompassing the ropes, substantially as shown and described.

4. The combination, in a belt, of two ropes, and a series of abutting metallic connections between and spacing said ropes and provided with end loops encompassing, but not firmly clamping, said ropes, the said strips forming a contact-surface of practically unbroken continuit-y, substantiallyas shown and described.

5. The combination, in a belt, of a pair of ropes, and a series of metallic strips connecting said ropes and abutting each other, whereby the said strips form the entire contactsurface of the belt, and which contact-surface is of practically unbroken continuity throughout the length of the belt, substantially as shown and described.

(3. In abel t, the combination, with two ropes, of j uXtaposed connecting-strips provided with looped ends through which the ropes pass, and with upwardly-extending projections forming a continuous side flange along the belt, substantially as shown and ('lescribed.

7. The combination, with a pair of endless ropes, of a series of transverse strips connected to and spacing said ropes, the strips being provided with end loops encompassing the ropes, the interior surface of the loops being convcxed, substantially as described.

DANIEL BRENNAN, JR.

\Vitnesses:

ED\VARD KENT, J12, (J. SEDo'WIoK.