US1677526A

US1677526A - Conveying and drying apparatus

Info

Publication number: US1677526A
Application number: US477849A
Authority: US
Inventors: Marshall Norman
Original assignee: Remington Arms Co LLC
Current assignee: Remington Arms Co LLC
Priority date: 1921-06-15
Filing date: 1921-06-15
Publication date: 1928-07-17
Anticipated expiration: 1945-07-17

Description

N. MARSHALL CONVEYING AND DRYING APPARATUS July 17, 192s. Y 1,677,526

'Enea gne 1 5 1921 I v sheets-sheet 1 July 17, 192.8.

N. MARSHALL COVEYING AND "DRYING APPARATUS Filed June15. 1921 7 Sheets-Sheet 2 July 17, 1928. 1

. N. MARSHALL CONVEYING AND DRYIG APPARATUS Filed June 1.5 1921 f7" Sheets-Sheet 5 2023132 w55: v @w29/Af July 17, 192s. 1,677,526 N. MARSHALL v y CONVEYING AND DRYING APPARATUS Filed June l5 1921 '7 Sheets-Sheet 4 lim/0:22am' Mii/17,655.- lr e'w7-a w' I :W 7%;7

j @Qi MM July 17, 1928. 1,677,526

N. MARSHALL CONVEYING AND DRYING APPARATUS Filed June 15, 1921 7 Sheets-Sheet 5 l E v 70 5:9 l Q l i j n 'j .f y i YL-F71: l

uw mi Emmlummmmm.

za' l N 2d' 6?/ V l/ l i? y l @gg-:mu Imam@ f f A 5 l O /l July 17, 1928. 1,677,526

N. MARSHALL CIONVEYING AND DRYING APPARATUS Filed Junel, 1921 l 'r sheets-sheet e Elven/30M 01M Mw mv@ Y July 17,` 1928.

N. MARSHALL CONVEYING AND DRYING.r APPARATUS 7. Sheets-Sheet 7 Filed June 15 1921 Inl/16723074 Patented July 17, 1.928. p

UNITED STATES 1,671,526 i. PATENT OFFICE.

NORMAN MARSHALL, QF WALTHAM, MASSACHUSETTS, ASSIGNOB TO BEH-INGTON ARMS COMPANY, INC., A CORPORATION F DELAWARE..

Application led .Tune 15, 1921. Serial No. 477,849.

This invention relates to an apparatus for conveying and drying tubular and similar articles.

Theobject of the invention is to provide a novel and improved apparatus for conveying and drying tubular and similar articles inv an economical and advantageous manner.

In the drawings illustratin the preferred 'embodiment of the invention, ig. 1 is an elevation of the left-hand portion of the apparatus; Fig. 2 is a detail of the left-hand portion of the lowermost section of the dryer; Fig. 3 is an elevation of the right-hand portion of Athe dryer and is to be used in connection with Fig. 1 to show the complete dryer in elevation; Fig. 4 is an enlarged side elevation of the transfer mechanism; Fig. 5 is an end elevation of the same; Fig. 6 is an enlarged sectional elevation showing two of the 'dryer sections in their relation to one another; Fig. 7 is a plan of the left-hand portion of the dryer; Fig. 8 is a sectional detail showing a portion of the lowermost drying section in end elevation; Fig. 9 is a detail in side elevation of the right-hand end of one of the dryer sections; Fig. 10 is a plan of the same; Fig. 11 is a side elevation of an alternate form of transferring mech-V anism; and Fig. 1'2 is an end elevation of the same with parts in section.

The apparatus illustrated in the drawings comprises, in general, a dryer 10, an elevating conveyer 12, and a transferring mechanism 14 for automatically transferring successive tubular articles from the elevating conveyer to the dryer,as shown in Figs. 1 and 3.

The dryer 10 comprises a series of endless link belts 2O arranged above one another each belt consisting of two sprocket chains, arranged at the proper distance' apart to engage and support the tubular article intermediate its ends and each link thereof being provided with an upstanding tube retaining lug 22. The endless link belts 20 each pass around sprockets'26 upon counter shafts 28 arranged as shown in Figs. 1, 3, 6 and 7. All of the link belts are geared together by cooperating Ipinion gears 30 on the ends of the counter s afts 28. One of the counter shafts 28 upon the left-hand end of the dryer is positively driven from a main power shaft 32, which is itself driven in any 55 suitable manner. All of the endless link 'endless link belt to the next below, until the belts 20, sprockets 26 and pinion gears 30 are supported by an angle iron frame work 36 'secured by vertical stays 38 in an over head position. Fans 40 draw air, heated by steam coils 42, laterally through the frame .work and over the tubular articles as they are conveyed by the link belts 'from one side of the dryer to the other.

In operation, the tubular articles are deposited between adjacent upstanding retaining lugs 22 upon the ltop of the uppermost link belt. The latter is extended to the left beyond the remaining endless belts to a point near the transferring mechanism 14, as seen in Fig. 1. This upper endless belt also is driven from the power shaft 32 through a chain 44 and sprocket 46 upon a counter shaft 48. Successive tubular articles are accordingly conveyed upon the upper stretch of the uppermost endless link belt to the right of the dryer. As successive tubular articles reach the sprocket 26 around which the upper endless belt passes at the right of the dryer, as shown in Fig. 3, they are guided beneath a guide or retainer and .around the sprocket. From the lower portion of the sprocket the tubular articles drop past the end of the guide 50 and fall into a cooperating space between adjacent, retaining lugs 22 upon the upper belt of the second or next lower of the endless belts 20, by which they are conveyed back across the dryer passing around sprockets and beneath guides at each end of the dryer from one lowermost sprocket 37 at the left-hand end of the dryer is reached. As the tubular articles pass around this sprocket 374 beneath the guide 50 they are delivered onto a raceway formed by 'bottom plates 54 supported 95 upon cross pieces 56 (see Fig. 2 upon the bottom of the frame work of the ryer. The lugs 22 depending from the Ibottom belt of the lowermost endless belt 20 serve to feed the tubular articles through the raceway to 10o the right-hand side thereof from which they are delivered to a belt conveyer 21 or other receiving device in a completely dried condition, see Fig. 3. y

The upper and lower-stretches of each endless belt 20 are supported at points intermediate the ends of the belts upon

metal shoes

59, 60. see Figs. 1, 3 and 6. The forked depending lugs 22 of the lower belts ride upon the metal shoes 60. The' metal shoes 110 59, 60 are supported u on cross bars 62 secured upon the vcrtica stays 38 of the dryer frame.

From the description thus far, it will be apparent that posit-ive timing of the several endless belts with relation to one another is obtained so that there is no tendency of the tubular articles to jam or stick in any part of the dryer. The guards or retainers 50 by which the tubular articles are conveyed around the sprockets may be adjusted by adjusting bolts GS, the ends of which bear against the cud uprights of the frame work of the dryer, as shown in Fig. 6. In this manner the position of the lower ends 72 of the guides may be adjusted to permit the tubular articles to fall at such time as to be nicely deposited between the upstanding retaining lugs 22 imlnediately beneath.

'lhe tubular articles as they are delivered from the machine 5 in which they are made,

arc elevated up to a posit-ion in proximity to the left-hand end of the top endless belt of the dryer, by an elevating conveyer 12. The elevating conveyer comprises a pair of

endless link belts

80, 82, which pass over

sprockets

84, 86. The Yupper sprockets 84 are mounted upon a coun-ter shaft 88. The counter shaft 88 is driven in timed relation to the speed of the upper endless belt from the power shaft 32 through a chain 89 and sprocket 91 upon a transferring shaft 90. Pinion gears 94, 95- upon the transferring shaft 90 and counter shaft 88, mesh with one another and operate to transmit the rotations of the transferring.,r shaft 90 to the counter shaft 88 to drive the ,elevating conveyer 12 in timed relation both to the transferring shaft and also to the upper endless belt. The

link belts

80, 82 of the elevating conveyer 12 are provided with upstanding tube retaining lugs 92 arranged as shown in Figs. 1 and 4. The distance between adjacent retaining lugs is such that successive tubes, as they are picked up from the machine in which they are made, are elevated and arrive at a point at the top of the elevating conveyer 12- in such timed relation to the transferring mechanism 14 as to enable a transferring mechanism to automatically transfer the tubes from the elevating conveyer and to deposit them between successive adjacent retaining lugs 22 upon the top belt of the upper endless link belt of the dryer.

In order that the requisite tension in each endless belt may be at all times maintained, provision is made for adjusting the sprock ets 26 at the right-hand end .of the dryer. For this purpose the journal boxes 29 are slidably mounted in guides 31 in a bracket 33 bolted to the uprights 36 of the frame, as shown in Figs. 9 and 10.` An adjusting screw 35 is provided to hold the sprockets in any desired position in the guides 31 so that veyer to extend upwardly in the general dii rection illustrated in Fig. 1 or may be constructed as shown in Figs. 11 and 12 in the event that the arrangement of the manufacturing machine is such as to necessitate the elevating conveyer to extend upwardly in the direction illustrated in Fig. 10.

The construction of the transferring mechanism illustrated in Figs. 4 and 5, comprises two eccentrically mounted cups 110 arranged A to pick up the opposite ends of the tubular articles from the tube retaining lugs 92,0f the elevating conveyer 12 when such lugs 92 are substantially in the position illustrated in Fig. 4. The cups 110 are secured to a disk 112 mounted upon a shaft 116V loosely received in a bearing 118 in a crank 120 secured to the transferring shaft 90. The shaft 116 carries a counterweight by which the cup 110 is always maintained up right, as indicated in Fig. 5. The shaft is driven in timed relation to both the elevating conveyer 12 and also the upper endless belt of the dryer. The mechanism by which the transferring mechanism, elevating conveyer and endless belts of the dryer are driven are such that the transferring shaft makes one revolution while the counter shaft for the elevating conveyer makes a half revolution and while the counter shaft over which the upper endless belt of the dryer passes is making one eighth of a revolution. Vith this arrangement the transferring cups as they are rotated about the transferring shaft 90, operate to pick olf successive tubular articles from the retaining lugs 92 of the elevating conveyer and deposit them nicely between` successive adjacent retaining lugs 22 upon the top belt of the upper endless belt of the dryer.

The transferring mechanism illustrated in Figs. 11 and l2 comprising an alternate form, consists of a single elongated cup shaped member 130 for picking olf the successive tubular articles from the elevating conveyer. The cup shapedmember 130 is' secured upon the upper end of arms 132, in the lower ends of which a crank shaft 134 is journaled. The crank shaft 134 is revolved by cranks 136 upon counter shafts 138, one of which is driven from the power "the oscillatory crank Ithe adjacent retaining lugs ymrraxsae shaft 32 through a chain 140 and

sprockets

142, 144 upon the power shaft and counter shaft respectivel Each arm 132 is provided with a slot 150 within which blocks 152 secured upon a lixed counter shaft 154 are slidably received. The comblnatlon of motion and the reciprocation of the arms 132 in relation to the blocks 152 produces a path of motion forV the cup shaped member 130 of.v substantially elli tical form as illustrated in dotted lines in Fig. 11. The elevatin conveyer is driven from the power shaft t

rough sprockets

160, 162 and a chain 164 and the top endless belt of the dryer is positively driven in timed relation to both the elevating conveyer and transferring mechanism by a chain 170 and sprockets 172, 17 4. With this arrangement the cup shaped member loperatesto pick o successive tubular articles from the retaining lugs of the elevating. conveyer and deposit them nicely within the space between 22 of the u per endless belt conveyer o the dryer om which the articles pass slowly yback and forth through the dryer and are delivered therefrom 1n a completely dried condition.

An important feature of the present dryer` resides in the lengths of the tube rfetaining lugs 22, which are preferably of greater length than one-half of the diameter of the tube to be dried. It is desirable that such length should be at least equal to one-half of the diameter of the tube in order that tubes may be conveyed from one belt of the dryer to the next lower in a satisfactory manner and without jamming.

It will be observed that the present apparatus conveys and dries the tubular articles in an efficient, automatic and convenient manner.

Having thus described the invention, what is claimed is:

1. An apparatus for'conveying and drying tubular articles having, in combination, an overhead dryer, comprising an endless link belt, an elevator for raising successive tubular articles to near the top of the dryer, transferring mechanism for automatically picking olf successive tubular articles from the elevator and placing them in operative position upon the dryer, and means for operating the elevator, the transferring mechanism and the link belt in timed relation whereby the tubes willV be depositedv successively upon the adjacent links of the belt 2. An apparatus for conveying and drying tubular articles having, in combination, a dryer comprising a series of superposed endless link belts, an elevatin conveyer for raising successive tubular artlcles to near the top of the dryer, transferring mechanism for automatically picking off successive tubular articles from the elevating conveyer and depositing them on the upper stretch of the upper endless link belt of the dr er, and means for o erating the elevator, t e transferring mec anism and the upper link belt in timed relation whereby the tubes will be deposited successively upon the links of the vupper belt.

3. An apparatus for conveying and drying tubular articles having, in combination, a dryer comprising a series of superposed link be ts geared' to ether, means for driving the link belts, an e evating conveyer for ralsing successive tubular articles to near the top of the dryer, and transferrin mechanism for picking off successive tubu ar articles from the elevating conveyer and depositing them upon the u per stretch of the upper endless link belt o the dryer, the successive endless belts of the dryer operating to convey successive tubular articles back and forth across the dryer upon the upper stretch of each endless belt. 4. An apparatus for conveying and drying tubular articles havin in combination, a dryer having means or conveying successive tubular articles, an elevating conveyerfor raisin successive tubular articles to near v the top o the dryer, and transferring mechanism for automatically transferring successive tubular articles from the elevating conveyer to the ,conveyer ofthe dryer, said transferring mechanism includingv a cupshaped member, and means for moving the cup-shaped member in timed relation to both the elevating conveyer and dryer conveyer to effect the transfer.

5. An apparatus for conveying and'drying t-ubular articles having, in combination, a

dryer having means for conveying successive tubular articles, an elevating conveyer for raisin successive tubular articles to near the top o the dryer, and transferring mechanism for automatically` transferring successive tubular articles from the elevating conve er to the conveyer of the dryer, said trans erring mechanism including two ec centrically mounted cup-shaped members, a counterweight for maintaining the cupshaped members upright through all portions of their paths of motion, and means for rotating the eccentrically mounted cupshaped members in timed relation to both the elevating conveyer and the conveyer of the dryer tol effect the transfer.

6. An apparatus for conveying and drying tubular artlcles having, in combination, an overhead dryer provided with a movable conveyingmember, means for elevating successive tubular articles to a point in proxmity to said movable member, means for automatically transferring successive artiv cles from the elevating conveyer and depositing them in successionupon the movable member of said dryer, said means including a tube engaging member havin provision for an upward movement to li the tube,

sidewisc movement toward the dryer, and downward movement to deposit the tube'on the dryer, and means for actuating it 1n timed relation to both the elevating conveyer and the movablemember of the dr er.

'7. An apparatus for conveying and rying tubular articles having, in combination, an overhead dryer provided with a movable conveying mem er, means for elevating-successive tubular articles to a point in proximity to said movable member, means for automatically transferring successive articles from the elevating conveyerland depositing them in succession upon the movable member of said dryer, said means including a cup-'shaped tube engaging member, a counterweight for maintaining the same in an upright position, a crank for causing said tube engaging member to rotate in a path to engage a tubular article upon the elevating means and to deposit it upon the movable member of the dryer.

NORMAN MARSHALL.