US1527983A - Paving machine - Google Patents

Description

K. A. LQNDSTROM Mar. 3, 1925.

PQVING MACHINE Filed Sept. 1s

1922 4 Sheets$heet O 0 9o MN m QQ N mk N I fiVerzZor Mar. 3. 1925. 527,983 1 K. A. LUNDSTROM I PAVINGTMACHINE Fild Sept."l8'=", 1922 4 she ts-sheet 2 Mar; 3, 1925. K. A. LUNDSTROM PAVING MACHINE Filed Sept. '18 1922 4 Sheets-Sheet 4 Kim? 17 Lzmdizmm' Patented Mar. 3, 1925.

Kara. warn-1 9% "sense ILLINOIS ravine MACHINE.

ApplicationfiledSeptember 15, 1922. Serial No. 588,745.

To alliwhom. it may concern:

Be it known that I, KNUT A. LUNns'rRoM, acitizen of the United States, residing at Seneca, in the State of *Illinois, have invented new and. useful Improvements in. Paving Machines, of which-the following isafull, clear, concise, andexactfdescription, refer= ence being had to the accompanying. drawing, forming. a partof this-specification.

My inventionrelates to paving machines. One of .the objects of my invention is to provide a paving machine which willlay the pavement quickly with. a 'minimum of manuallabor. 1

w A further :object. of invention is .to provide: a machine .which. will lay T a wh ole row of pavingrblocks or-bricks atl ail time.

A further;ob;iect-.-of-my invention: is to provide apaving machine which will lay a whole row of bricks at; a time andwpr-ess the row oft-bricks snugly against. the pavement already laid.

A further. object-of. my invention is to provide a paving machine which is advanced by the act of'pre'ssing: the bricksfto belaid against. those rallreadylaid;

A further object of my invention is-to provide a paving. machine .in which the bricks to be laid are carried on a floating support.

A furthenobject of: my invention is to provide a paving machine having meansto support a layer. of; bricks and meansifor withdrawing this supporflfrom underneath the layer Ofi bricks.

A further. object.- or my invention. is to provide a paving'machine having means .for supporting. a layer of bricks, with. means. whereby thesupport may be Withdrawn from underneath th'e layer, ore-bricks and' the paving machineusimultaneously advanced.

Further objects will 1 appear: from the de-= tailed description to follow and ifrom the .ap-. pended claims. 4

In the drawings, inwhich anembodiment otmy invention is shown,fFi-g. l is;a plan view of the paving. machine extending [from cur-b to vcjurb;v I l 5 Fig: 2.: is. a. rear, elevation of the machine, showing thecnrb and iroadebedwin is'ection;

Fig. 3 is a perspectiveviewIshowing the, layer'ot bricksrestingl on the inclined floatv ing support;

Fig. 4,115. a. section on, theline: of

Fig-: i V I l I v l g; ,5: is. an .end view showin g .the,.-machine mo ntedi o e ransportation;land

Fig. 6 is a perspective view of a detail of the bridge and conveyor.

Referringznow to the drawings in detail, the pa ing-machine shown therein comprises acarriage 10 mounted to travel on the curbs 11 and '12, and having an arched bridge 13 extending. from one side of the street to the other, for supporting-a row of paving blocks or bricks, aseries of pivotally mounted rearwardly extending inclined floating fingers 14,;(pivotedat one end on the bridge 13, and having, the other end floatabl'y resting on the; road-bed) for supporting a layer of bricks extending from the bridge 13 to the road-bed, a recipr'ocable transversely extending archecl:puslier-bar 15, -for engaging the roW of bricks on the bridge 13, a vertically reciprocable guide-ban 16, (which together withftheapusher-bar 15: forms a channel for the ipavingblocks or bricks as they are fed onto. the bridge lffi, and which when lifted permits the pusher-bar 15 to engagethe row otbrick s on :the bridge to push the machine forward and press the bricks to be laid firmly against thebricks already laid,) conveyoremeans 17; extending along one-half of the bridge l3,"for conveying the bricks along this bridge 13, mechanism 18 forcontrolling the .moveme'nt'of'the pusher-bar 15, mecha nism 19-for controlling the movement of the vertically. reciprocable guidebar 15, and mechanism 20 .for controlling the conveyor mechanism 17. 2

Coming now to a more detailed descript-ionof-the various parts thus broadly referred tonabove, the carriage 10 is provided with four rollers whichrest onthe curbs 11- and 12, the front rollers 21 and 22 being provided with flanges 23 and 24 respectively, for-engaging the inside edges of the curbs, the rear rollers 25 and 26 not being pro videdwithflanges, but resting on top or" the curbs. In explanation of the provision of flanges on the front rollers and the fact that the rear rollers do not have flanges, it is stated that the front rollers are in advance ofathelpart of the pavement which is laid,

so. that there is no pavement to interfere with-the flanges, while the rear rollers are in;the rear of the pavement which'is laid, and-this. avement might interfere with the flanges. i 4

The'transversely extending arched bridge comprisesa pair of "arched- beams 27 and 28 extending between the end trucks 29land 30 on which.theLrollers22, 23,1 25-, and-26am mounted, these beams 27 and 28 are serving as a support for the conveying mechanism 1? which lies therebetween.

The series of pivoted floating fingers 1 1 which together form a floating support for a layer of the bricks, are pivotally mounted at 31 on brackets 32 secured to the rear of the beam 27.

In order to guide the layer of bricks and properly posi ion them laterally, I provide a pair of spring guides 32 and 32 respec tively, the tension in the spring guide 32' being such as to cause it to bear against the adjacent curb, so that the bricks will be guided to lie snugly against the curb, the tension in the sprii finger 32 being such as to bear on the adjacent edge of the layer of bricks and tend them to force the layer of bricks over towards the curb on the opposite side of the street. Thus the layer of bricks will engage one curb snugly and any space between the layer of bricks and the curb on the opposite side may be filled in by hand as the machine has done its work.

The mechanism 18 for controlling the pusherbar 15 comprises a plurality of racks. 83, 34c, and 35, to which the pusher-bar 15 is secured, a plurality of pinions, 36, 37 and 38, meshing with the racks respectively, a common shaft 39 upon which the pinions 36, 37 and 38 are mounted, and manually controllable mechanism 40 whereby the shaft 39 may be caused to rotate in one direction or the other at will.

The pusher-bar 15 can thus be caused to move back and forth as desired.

The manually controllable mechanism 19 for controlling the raising and lowering of the guide-bar 16 comprises a hand-lever 11 and a pair of cables 12 and 43, connected at it and 4-5 respectively to the ends of the guide-bar 16, suit-able pulleys being provided at 4:6, l? and 18, to guide the cables 12 and 13. Referring to Fig. 2 it will be seen that moving the lever 41 left will raise the guidebar 16, while moving it to the right will permit it to lower under the influence of gravity.

The conveyor-mechanism 17 for advancing the bricks between the pusher-bar 15 and the guide-bar 16 comprises a series of rollers 419 having circumferential grooves 50, and an endless cable or belt 51, the upper run of which lies in the grooves of the rollers 49.

The mechanism 20 for actuating this convevorcable 51, omprises a grooved drive pulley 52, (Fig. a shaft 53 on which the pulley 52 is mounted, a bevel-gear 54 mount ed on the shaft 53, a bevel-gear 55 meshing with the bevel-gear 54:, a shaft; 56 on which the bevel-gear 55 is mounted, a sprocket 57 mounted on the shaft 56, a sprocket chain running over the sprocket 57, a sprocket 59 driving the sprocket chain 58, a shaft 60 -on the shaft 6 1 hereinafter referred to.

on which the sprocket 59 is mounted, a

sprocketifillneu .c ,arrda sprocket chain 62 running over the sprocket 61 and driven from the sprocket 63 mounted the pulley 52 drives the cable 51, the cable 51 lying in the rooves 50 of the rollers 19 causes these rollers to revolve, and the cable 51 acting with the rollers 19 causes the bricks to be advanced toward the middle of the bridge.

t will be noted that the cable 51 extends only to the middle of the bridge. There is no necessity for extending it farther, as the bridge begins to slope downwardly from the middle and the bricks resting on the anti-friction. rollers are simply pushed along by the bricks resting on the driven rollers 49, the bricks resting on the antifriction rollers 65 being assisted in their movement by gravity.

Suitable mechanism is provided for driving the shaft 18 which controls the recipro cation of the push-bar 15, comprising a drive-pulley 66, a' shaft 67 on which the pulley 66 is mounted, a pinion 68 mounted on the shaft 67, a ear 69 meshing with the pinion 68, a shaft 0 on which the gear 69 is mounted, a sprocket 71 mounted on the shaft 70, a sprocket chain 72 running over the sprocket 71, a sprocket 7 3 driven from the sprocket chain 72, the shaft 61 hereinbefore referred to, on which the sprocket 73 is mounted, a bevel-gear 75 mounted on the shaft 64 and the manually controllable mechanism 10 hereinbefore referred to for controlling the direction of rotation of the shaft 18 at will.

The reversing mechanism 10 comprises'a hand-lever 76, pivoted at 77, a link 78, pivoted to the hand-lever 76, a lever 79 pivotally connected with the link 78, a clutch sleeve 80 movable back and forth by means of the lever 79, a shaft 81 on which the clutch-sleeve 80 is splined, oppositely rotating beveled pinions 82 and 83, loosely mountedon the shaft 81, and both meshing with the bevel-gear 7 5, a bevel-gear 8 1: mounted on the shaft 81, and a bevel-gear 85 on the shaft 39 and meshing with the bevel-gear 84.

The above described transmission bet-ween the pulley 66 and the shaft 39 which con trols the pusher-bar 15, is provided simply for the purpose of enabling the shaft 13 to be driven in either direction at will, whenever desired, and any other transmissions which will accomplish the purpose equally as Well may be substituted.

The use and operation of the paving machine is as follows: 7

Assuming that the curbs 11 and 12 and the road-bed 86 have been prepared ready for the paving blocks or bricks, the machine is placed in position with the rollers 21,

1 eater veyor. mechanism ,17, v is then. ,put in I motion ndbi' is' re' l 1 35 i0 al f y r, mechanism, 17, the bricks'bein g fed in at the right hand of the achine as Shawn, in Figs 1,. and 2,'f The brick'sare carried to the left as shown in Figs. '1 and 2 by means of the conveyor mechanism" 17 until a row' of bricks is formed extending completely across the bridge, the bricks" being pushed along after they leave the driven rollers 4:9 by means of the bricks which are resting on these rollers.

As soon as a row of bricks extending across the bridge has been formed between the guide-bar 16 and the pusher-bar 15, the conveyor mechanism 17 is thrown out of gear by means of a suitable clutch (not shown). The guide-bar 16 is then lifted by moving the hand-lever 41 to the left as shown in Fig. 2, this guide-bar being thus raised to the position shown in Fig. 4. This gets the guide-bar 16 out of the way of the row of bricks so that the pusher-bar 15 can be operated. The hand-lever 76 which controls the operation of the pusher-bar 15 is then moved toa position to cause the shaft '39 and pinions 37 to rotate in a direction which will tend to move the racks and pusher-bar 15 rearward. This causes the pusher-bar 15 to bear on the bridge 13, and this pressure reacts on the'machine, to shove the machine forward, at the same time pushing the layer of bricks 87 resting on the floating platform snugly together and forcing the bricks which are at the extreme rear ends of the floating fingers 14 snugly against the bricks which are already laid.

l/Vhen the machine has been pushed ahead a distance equal to the thickness of the row of bricks, the lever 76 is shifted to reverse the direction of rotation of the shaft 39, causing the racks and pusher-bar 15 to be moved ahead, out of the Way of the guidebar16. When the racks 34: and pusher-bar 15 have been moved far enough ahead to get them out of the way of another row of bricks, the lever 7 6 is moved into neutral position and the shaft 39, racks and pusher-bar 15 come to rest.

This cycle of operation described is then repeated, another row of bricks being fed onto the bridge by means of the conveying mechanism 17, the guide-bar 16 being then lifted away, and the pusher-bar 15 shoved rearwardly to feed the machine ahead and with d wiiefltaa rg: out from iiderne'- the r'ear lay'er ofibrlicksj' resting n it an d 'am this 're'ai"' layer of bricks snugly against the:bricks already laid.

I i order to readily transportthe machine froiii onezplace to another," I may; provide 1 Set Of wheels 8Swhich may reaag ily attachable and detachable with r'e sipect to the pocketsfiS) in which theyare swivel e'd. desired, 1 may also provide a readily attachable and detachable tongue or draft connection 90 for use in hauling the machine I from one place to another.

In irder that the machine may be made adjust b e i101. p ing; eet of di fe e t widths, ll mayprovide i tran actions ss eve in... .g- 6... wher y; conveyor, and ihe'fltatabi upport may be lengthened out. To accommodate this in-' sertable section, the bridge itself may be made in sections, separable at any suitable point, (for instance, at the'middle of the bridge). When it is desired to lengthen out the bridge for a wider street, the bridge may be disconnected at the middle and the section shown in Fig. 6 inserted. This section will be provided with the finger-supporting brackets 32 for supporting the floatable fingers 14. and will carry a set of conveyor rollers 65, between the beam sections 27 and 28.

Any suitable means may be provided for connecting the sections together, such as connecting plates 88 and 89 provided with bolt-holes 90, through which bolts may be inserted for securing the adjacent bridge sections together.

It will thus be seen that I have devised an improved paving machine which requires a minimum of manual labor, in which the pavement can be quickly laid, and in which the paving bricks or blocks will be pressed firmly together as they are laid.

lVhile I have shown but one embodiment of my invention, it is obvious that it may be embodied in other forms covered and defined by the appended claims.

the bridge,

Having thus described my invention, what I claim as new and desire to secure by Letters Patents of the United States is:

1. A paving machine comprising a carriage movable longitudinally of the street to be paved, a bridge supported on said carriage extending transversely of the street,

for supporting a row of paving blocks or bricks, rearwardly extending supporting I of bricks is pressed snugly against the pavement already laid, and a guide bar co-operating With said pusher-bar to form achannel for the roW of bricks on the bridge, said guide bar being movable from a position in which it acts as a guide for the bricks to a position in which it is out of the Way of the bricks they are acted on by the pusher bar.

2. A paving machine comprising a carriage movable longitudinally of the street to be paved, floating means for supporting a layer of paving blocks or bricks pivotally mounted at its front end on said carriage and with its rear end floatably resting on the road-bed said layer extending transversely of the street.

3. A paving machine comprising a car riage movable longitudinally of the street to be paved, means for supporting a layer of paving blocks or bricks on said carriage, said layer extending transversely of the street, said supporting means comprising a plurality of fingers having their ends floatably resting on the road-bed.

4. A paving machine comprising a carriage movable longitudinally of the street to be paved, rearWardly extending floating means for supporting a layer of paving blocks or bricks pivotally mounted at its front end on said carriage, said layer 6X- tending transversely of the street, and means for moving said supporting means from underneath said layer of bricks.

In Witness whereof, I have hereunto subscribed my name.

KNUT A. DUNDSTROM.

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