US1571386A - Machine for laying brick paving and the like - Google Patents

Description

Feb; 2,1926. 1,571,386

H. R. STRAIGHT MACHINE FOR LAYING BfiICK PAVING AND THE LIKE Filed June 15, 2 5 Sheets-Sheet 1 Feb. 2 1926. 1,571,386

H. R. STRAIGHT MACHINE FOR LAYING BRICK PAVING AND THE LIKE Filed June 15, 922 5 Sheets-Sheet 2 .Ezdarzfor Feb. 2,1926. 1,571,386

} H. R. STRAIGHT MACHINE FOR LAYING BRICK PAYING AND THE LIKE Filed June 15. 1922 S ShutQ-Shut 5 Feb. 2 1926. 1,571,386

H. R. STRAIGHT CHINE FOR LAYING BRICK PAVING AND THE LIKE Filed June 15. 1922 s sums-sheet 4 Feb. 2 1926. 1,571,386

H. R. STRAIGHT I MACHINE FOR L AYING BRICK PAVING AND THE LIKE Filed June 15, 1922 5 sheets-s eet s fizz/swim 40 matic machine for laying paving improved Patented Feb. 2, 1926.

UNITED STATES HALVER R. STRAIGHT, 0F A DEL, IOWA.

MACHINE FOR LAYING BRICK PAVING- AND THE LIKE.

Application filed June 15,

To all whom it may concern:

Be itknown that I, HALVER R. STRAIGHT, a citizen of the United States, and a resident of Adel, in the county of Dallas *and State of Iowa, have invented a certain new and useful Machine for Laying Brick Pavinga specification. i

The object of my invention is to provide a machine having brick receiving hoppers or feed conveyors adapted to receive a number of brick, and so arranged and constructed that a brick will be automatically taken from the hopper and laidL in the regular formation over the top of a road bed for the purpose of forming a brickpaving.

A further object is to provide a mechanism of comparatively simple, durable and inexpensive construction adapted to automatically receive brick from hopper provided for that purpose and to deliver-them in a systematical and proper manner to the upper surface'of a road bed, and to provide in such a device means whereby half bricks will be automatically fed to each alternate row of brick for the purpose of placing them in staggered relation with each other. F i

A further object is to provide in a paving brick laying machine receiving hoppers and means for automatically placing the brick "from the receiving conveyors into a series of positive rows extending transversely across the road bed, and to provide in such a de vice means for successively forcing each succeeding row adjacent to the previous row, the said forcing means being designed to simultaneously advance the machine forward. i

A further object is to provide in an automeans for mounting and advancing the ma chine relative to the road bed, so that the paving will be of a uniform height and to a predetermined grade.

A further object is to provide in an automatic machine for laying brick paving,improved means whereby'road beds ofdifi'erent Widths maybe laid with a very slight and inexpensive change in the machine for ad- 2 usting it from one road bed to another. 1

These and other objectswill be apparent to those skilled in the art. i

My invention consists inthe-construction, arrangement and combination "of the various'parts of the device, whereby the objects and the'like, of which the follo-wingis 1922. Serial ,No; 568,385.

contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which:

Figure 1 is a plan view of my improved machine for laying brick paving.

Figure 2 is an end elevation of Figure 1.

Figure 3 is a vertical, longitudinal, sectional View taken on the line 3-3 of F igure 1. i a

Figure 1 is avertical longitudinal, detail, sectional view taken on the line 4.-4 of Figure 1. a

'Figure 5 is a vertical, longitudinal, sec tional view taken on the line 55 of Fig ure 1. 1

Figure 6 is a front elevation of Figure 1 showing a portion of the curbing and road bed in section. v 1' Figure 7 is aseginental, detail view-oil one end of one of the supporting beams.

Figure 8 is a horizontal, detail, sectional view taken onthe line 88 of Figure 3.

Figure 9 is a diagrammatical detail view illustrating the manner in which one end of th'epavingis laid. i

Figure 10 is a detail View of the mechair ism for dropping the half brick into posi- My improved device comprises a frame 10' formed of a series of longitudinally and, transversely arranged beams, theweight of the machine beingicarried by the longitudinal beams 11 and 12;

Each end of each of the beams 11 and 12 is provided with a bracket 13, each of which has a flanged wheel 14, best shown in Figure 2. The wheels 1& are designed to travel on the upper edge of the cement curbing 15 at each side of the road bed 16.

Extending transversely above the forward end of the beams 11 and 12 is a beam 17 The beam 11 is permanently fixed near one end of the beam 17, While the beam 12 is adjustably fixed near the opposite end of to the beam 12. A longitudinal beam 22 is fixed to the right hand end of the beams 17, 19, and 21. The last said beams and the beam 11 form a rigid frame of a given length, and of such length as to cover a maximum-road bed, while the beam 12 is adjustably connectedin such a manner as to be moved toward or from the beam 11 so that the wheels 14 may. engage the top surface of eurbings of different spacings.

The beams just mentioned form the main supporting frame,. 0ther minor transverse and longitudinal beams being'provided for the purpose of carrying the mechanism to be described, which will not be mentioned in detail as the exact placing of these beams I is immaterial any other tha'ncto carry the beam 11 is a feed conveyor 23 comprising a COIHIHOHlV'kIIOWII as on edge. I

mechanism for producing the results hereinafter described, the positions of which are clearly shown in the drawings.

Mounted ad'acentto the outside of the suitable frame provided with a bottom formed of a series of rollers 24, the said conveyor being of a widthslightly greater than the length of the paving brick, and the bottom of theconveyor having its front end mounted in an elevated position and inclined downwardly and rearwardly, as clearly shown in Figure 2,'so that when the brick are placed on the rollers 24 theywill feed rearwardly by gravity, the brick being placed with their width vertical, or what is Suitable brackets 25 are provided for holding the conveyor in position "relative to the beam'll. A similar conveyor 26 is provided at the right hand end of the machine adjacent to the beam 22 and of such width as to carry brick of half length, or what is commonly known as half brick which are also placed on edge and designed to feed brick downwardly and rearwardly.

Secured to the under side and beneath the rear ends of the beams' 11 and 12 and in line with the bottom and front end of the conveyors 23 is an inclined plate 27, Figures 1 and 3.

The upper edge of the plate 27 is secured to the upper face ofthe beam 20 whil'e'its lower edge terminates at apoint indicated by the numeral 28, Figure 3. This. plate forms the lower end of the conveyor23, and

i is designed to receive the brick delivered therefrom.

The downward movement of the bricks of the conveyor 23 is limited by means of a plate 29 placed in position-substantially perpendicular to the plate 27 andnear itslower edge. .Theinner end of the plate 29 is 'se. cured to the beam 11 by means of a bracket 30, Iiignrev 2, the inner end extending be- Heath the saidbea-m. Y

' The outer end of the plate 29 is provided with a slot 31 in which is slidably mounted ag-feed plunger 32 providedwith a beveled face 33, the inner end of the plunger 32 being thinner than the back end, and designed to engage one end of an adjacent brick for the purpose of sliding it out from beneath the brick above and inwardly along the bottom of the plate 27. purpose of permitting the column of brick on the conveyor 23 to move downwardly gradually as the plunger 32 is moved outwardly from beneath them.

' The opposite end of the plate 27 is provided with a plate 34, similar to the plate 29, which is provided with a plunger 35 similar The bevel 33 is for the to the plunger and being arranged to 1 move a half brick inwardly, one end of the plate 34 being secured to the beam 22 and extended beneath.

Extending transversely between the beams 11 and 22 and in line with the plates 29 and 34' I have provided a plate 36, best shown in Figures 1 and 5. This plate 36 is of a width slightly greater than the width of a brick and designed to pass beneath the bracket 13 of the beam 12. This bracket 13 is provided with an upwardly curved portion 13" above the-plate 36. The said plate 36 is pivotally mounted to one end a set of parallel bars 37. i

The bars 3'? are arranged in a number of pairs and attached to the plate 36 at various points throughoutit-s length so that the said plate maybe rigidly mounted against downward movement of the bricks, and at the same time free to move'upwardly to permit the bricks in front to slide beneath the same.

The upper ones of the bars 37, whichvare mounted to the plate 36 between the beams 11 and 12,, are secured to a transversely. arranged shaft 38, Figures 3 and 6, so arranged that when the said shaft is rocked the plate 36 will be elevated and lowered. The lower ones of thes'aid members 37 are pivotally connected to brackets 39 secured to the lower face of thebeam 17. The lower ones of the mem'bers37', which are adjacent to the right hand end of the plate-36, is at tached to the shaft 38 while the upper one is pivoted to a bracket 40 secured to the beam 17. 'The' upper: one of the last said members 37 is pivotally connected to an upwardly extendingportion 41 of the plate 36, clearly shown in Figure 6. Any number of these members 37 may be placed as desired so as to stiffen the plat e- 36. I

Thus it will be seen that as the feed plunger 32 is reciprocatedin its slot, a row of brick will be fed transversely through the entire width of the road bed on the plate 27 adjacent to the front face of the plate 36; When therow has reached. a predetermined length, mechanism hereinafter to be described will automatically elevate the plate downwardly upon a downwardly and for wardly inclined. plate 42, the upper edge of which joins the lower edge of the plate 37 by means ofa union plate 43, the said plate 42 being carried by beams 44 and 45. The plate 42 is of a length equal to the distance between the curbings of the road bed.

. The beams 44 and 45 are supported at each'end by means of downwardly extending plates 46from their respective brackets 13 and 13?. y

Thus itwill be seen that as the rows of brick are pushed inposition in front of the plate36 and are then released beneath it, they will. slide dowi'iwardly until they engage the upper face of the road bed, as clearly shown in Figure 3.

In order to force each succeeding row of bricks adjacent to the one which is last laid upon the upper surface of the road bed, 1 provide the ram bar 47 which rests normally on top ofthe plate 27 and adjacent; to the frontsurface of a transversely moving row of bricks in front of the plate 36. This ram bar is of a length less than the distance between the beams 11 and 22, but half the length of a brick, thespace being provided at the lefthand end inside of the beam 11 at thepoint 4S,"the purpose of which will hereinafter be madeclear.

Pivotally secured to the ram bar 47 is a series of links 49,,each of which hasits upper end mounted on an eccentric 50; Each of theeccentrics secured to a shaft 51 'rotatively mounted in suitable bearings of the main frame, so arranged that as the said shaft is rotated, the rain bar 47 will 'be moved ,rearwardly and forwardly, the bar 47 being moved forwardly at the time the plate 36 is elevated. This will cause the rows of bricks in front of the plate 36 to engage thev one just below it and the rows of bricks which engage the upper face of the road bed to be forced into engagement with each other. This movementwill alsocause the whole-machineto be moved rearwardly a. distance equal to the thickness of a brick. No other mean s for advancing the machine being provided The means for rotating (his shaft will be hereinafter described.

The mechanism for operating these de- ;vices above described is as follows:

Mounted upont-he frame members 21 and 191 have provided preferably an internal combustion engine 52. e In line with the crank shaft of the said engine I have provided a drive shaft 53 which isrotatively mounted in the main frame. A clutch device 54 is provided for operatively connecting and disconnecting the engine with the shaft- 58, the said clutch being provided with a lever 55 for operating it., This clutch may be of any ofthe ordinary friction clutches and need not be described in detail. a

- The shaft 53 is provided wltha pinion 56 which is in mesh with a gear 57 mounted on a rotatively mounted shaft 58. The shaft 58 is provided with a pinion 59.

Parallel with the shaft 58 I have provided a shaft 60, shown in detail in Figure 8. This shaft is provided with a sleeve 61 on which. is mounted a disk 62. Adjacent tothe disk62 is a drum 63 which is provided with a pinion gear 64. The pinion gear 64 and the drum 63 are rigidly securedrto a gear65, all of which are loosely mounted on the shaft 60.

Adjacent to the gear 65 is a cam 66 Which is secured to said shaft 60. The sleeve 61 is provided with a lug 67 in which is pivotally mounted a shaft 68 having a trip arm 69. One end of the shaft 67 extends through the disk 62 andhas on its inner end a pawl 70. This pawl is designed to be' engaged by ratchet teeth71 on the inner face of the drum 63, the said pawl being yieldingly held in engagement with the said teeth by means of a spring 72, Figure 3.

Pivotally secured to a bracket 73,011 the upper face of the beam 11. is an arm 74, Figures 1 and 3. This arm 74 is provided with a roller 7 which is designed, to engage the cam 66. The free end of'the arm 74 is pivotally connected to a link 76 by means ofa ball and socketjoint 77. The lower end of the link 76-is pivotally connected to a rock arm 78 which is mounted on the lower end of-;a slightly inclined shaft 79 mounted in suitable bearings and outside of the conveyor 23, Figure 2.: 1 The upper end of the shaft 7 9 is provided with a rearwardlyand downwardly extending arm 80, the lower end of which is piv=- ot ally connected to the feed plunger 32 by means, of links 81. The said arm 80 is pivotallyanounted. onthe shaft 79 and 0p eratively connected therewith. byqneans of a coil spring82, the said spring being of such stiffness that the arm 80 will actuate normally in unison with the shaft 7 9, but if the. plunger 32 should be rigidly'held against movement, aswillhereinafter bodescribed onaccount of the row; of brick en gagingfthcpfixedplate at itsopposite. end, the shaft 79 will be permitted to finishits movement without breakage. v

Thus it will be seen that if the shaft 53 is rotated the gears 56, 57, 59 and 65 will be rotated; Thisnvill cause thedrum 63 in turn to be rotated and the disk 62 through the pawl 70, and the cam 66 in turn will rotate-,, which will cause the free: end of the arm 74 to lee-oscillated and the shaft 79 rocked, by its connecting links This in turn will cause the freeend of the. arm- 80 to be swung about the pivot of the shaft 79 through said shaft, and the plunger 32 moved inwardly and outwardly and at the time it is moved inwardly, a brick will be pushed in froinbeneath the pile, as before described. V 1 v a a This movementwill .continue until a complete column of bricks have been moved upon the plate 27, at which time the said end will engage the free end of a lever 83, pivotally connected on a bracket 84 of the beam 12, clearly shown in Figure 1.

The opposite end of the lever, 83 is provided with a telescopic link 85 which is slidably mounted in a bearing 86 adjacent to the sleeve 61 in such a manner that as the member 85 is reciprocated it will be moved into and out of engagement with the arm 69. As the column of bricks is being completed, the free ends of the lever 83 will be engaged thereby and moved outwardly, which will cause the free end of the member 85 to be moved into engagement with the arm .69, while said arm is being rotated about the shaft 6O bymeans of the pawl 70. Thus the said pawl 70'wil1 be moved out of engagement with the ratchet teeth 71 and the operation of the feed plunger 32 stopped.

A'spring 87 is provided for moving the rod 85 out of engagementwith the arms 69.

This outward movement is prevented by means of a spring actuated hook 88 which engages a lug 89 of said rod 85. r

' Pivotally mounted adjacent to the rod 85 is a lever 90 which carries a rod 91 slidably mounted in the 'bearing86 in such a manner that as the rod 85 is moved in one direction, the rod 91 will be moved in the opposite direction.

. Mounted on the shaft 51 is a sleeve 61 similar to the sleeve 61 and a drum 63 similar to the drum 63. The drum 63 7 however, being secured to a gear 92. This gear92 is in mesh with the pinion 64 of the the drum 63, and the sleeve 61 is provided with an arm 93.similar to the arm-69and designed to be engaged by the rod 91.

Thus it will be seen. that as the rod 85 engages the arm 69 to throw. the shaft out 7 of operative relation with-the gear 65, the

rod 91 will be moved out of engagement with the, arm 93 'to throw the shaft 51 into operative engagement with the gear 92, thereby causing the said shaft 51 to be rotated.

.Secured to the centra-l portion. of the shaft 51 is a cam' 94 in operative relation with a roller 95 carried by a link 96, the free end of said link being operatively connected to ani'arm 97 mounted on the shaft 38, so that as the shaft 51 starts to rotate in an anti-clockwise direction, as illustrated in Figure 4, the upper. end of the arm 97 will be swung toward the shaft 51 and the plate 36 lifted through the arms 37.

In this part of the movement ,of the shaft 51, the ram bar 47 is being .moved downwardly toward the row of bricks in front of the. plate 36, a slight distance being provided'between the ram and said bricks for the purpose of this movement.

Just after the lower edge of the plate 36 has been elevated above the upper edge of the bricks, the ram 47 engages the said bricks and forces them downwardly and the machine forwardly, as before described.

Mounted on the shaft 51 adjacent to the pivotal connection of the lever 88 is a cam 98 which is designed to engage a pin 99 just before the shaft has completed one revolution. This pin 99 is pivotallycomieoted to the lever 88 and causes the same to disengage the lug 89. The spring 87 will then move the rod out of engagement with the'arm 69 and cause the rod 91 to engage the arm 93 thereby throwing the shaft 51 out of operative relation with the drive gear 92, and the shaft 60 into operative relation with the gear 65.

Loosely mounted on the shaft 79 I have provided a sleeve 100 which has a rearwardly and inwardly extending arm 101, the free end of which is provided with a shoe 102 designed to be moved intermittently into and out of engagement with the outer ends of the bricks of the conveyor 23. 1A forwardly extending arm 103 is also attached to the sleeve 100 to which 1s connected one end of a link 104. The opposite end of the link 104 is connected to an arm 105, Figure 6, which in turn is mounted on a shaft106, the lower end of said shaft being provided with an arm 107 having a shoe similar to'the shoe 102 for the purpose of striking the inside ends of the bricks simultaneously with the shoe 102, the link 104 being connected in such a manner that the two shoes will be moved toward each other and apart simultaneously, the said shoes being yieldingly held at their outer limit of movement by means of a spring 108, and the shoesbeing forced inwardly by means of a pin 109 mounted in the arm 80, said pin being designed to engage the shoe 102 when the plunger 32 is moved inwardly. The out ward movement of the shoes is limited by the'shoe'of the arm 107 engaging the beam 11 ,upon which the shaft 106 is mounted.

' Thus it will be seen that if the' bricks are piled on the conveyor 23 in a more or less staggered relation, the ends will be moved into alinement with each other by the said shoes so that they will always be in proper alinement to be engaged by the plunger 32.

In order that thebricks of each row of bricks on the plates 27 and 42, may be laid in staggered relation to its adjacent row, I have provided means for feeding half bricks into the right hand end of each alternate row ofbricks. This I have accomplished by setting the conveyor 26 on a slightly higher elevation than the conveyor 23 by a distance slightly greater than the width or height of a brick. The lower end of the conveyor 26 terminates on a plate 110 parallel and above the plate 27, as clearly illustrated in slightly inside of the beam 12. This, of

suitable bearings 123.

course, has to be made of a difi'erent length whenever the beam 12 is adjusted laterally.

Adjacent to and in alinement with the inner end of the plate 110, I have provided a slidably mounted plate 111 which is mounted in a bracket 112 secured to the beam 12. This plate 111 is designed to move for ivardly a suflicient distance to permit the bricks on top of it to fall to the plate 27 as the said plate 111 is moved from beneath it, the plate 111 being of a width substantially equal to the length of the half bricks. The half bricks are fed tothe said plate longitudinally on top of the plate 110 by means of the plunger 35 which is recipro-v catedo-nce during every other revolution of" the shaft. 51 by the following mechanism:

Mounted on the right hand end of the shaft 51 is a pinion 113 which is in mesh with a gear lltinounted on a shaft 115. This shaft is provided with a cam 116 similar to the cam 66. Pivotally mounted to a bracket 117 is a lever 118 which is provided at its central portion with a roller 119 designed to engage the cam 116. The

forward end of the lever 118 is provided with alink 120 which has its lower end connected to a crank arm 121 mounted on a vertically arranged shaft 122 supported by This shaft 122 is provided with an .arm 1241, the free cnd of which is provided with links 125 operatively connected with the slide plunger 35.

Thus it will be seen that during every other revolution of the shaft 51 the plunger 35 will be operatedand consequently a half brick will be moved on to the plate 111 for each alternate row of bricks which are moved on to the plate 27, the mechanism being so timed that the slide plate 111 will be'operated slightly before the ram 47 has reached its; forward limit of movement and before a row of bricks has been moved on the plate 27. The half brick is then moved into position againstthe lever 83 by the incoming row of bricks through the action of the plunger 32. The stroke of the plunger 32 is ordinarily such that a brick will be moved a distance equal to one and one-half its length, but when the half brick engages the lever 83 the said lever will be moved to poposition whereby the plunger 32 is stopped when it has moved a distance equal to the length ofa brick. This will leave the left hand end of the brick extending to the left and beyond the previous left hand brick a distance equal to the length of the half brick.

' In actual practice the distance between theinnerend of the rowof bricks of the conveyor 23 and the left hand end of the .by the spring 82.

rows of bricks as they are laid in the paving is slightly greater than the length ofa half brick, but when the half brick has been dropped into position on the plate 27 ,the next time the .plunger 32 isactuated, it will move but a distance slightly greater than the length ofa single brick, therebyleaving the bricks' of two adjacent. rows in 'staggered relation with each other.

When a half brick has been dropped in position, the movement of the plunger 32 will be consequently limited to two-thirds .of what it ordinarily moves. The shaft 79, however, will makeits'complete movement due to the driving mechanism before described,,the said movementbeing permitted The inner endof the plate 29 extendsin wardly a distance equal to the length of 'a brick inside of the inner edge of the row of bricks of the conveyor'23. The left hand end of the ram .47 terminates at a distance of a half brick inside of the end of the plate 29, as clearly shownin Figure 9.

When a half brick has been dropped into position and the column is complete and the plate 36 is elevated, the ram 47will move rearwardlybut does not engage the inner end of the last brick moved into position. Thus the column is moved rearwardly with the exception of this last half brick which rests on theplate 27 and is held against moving forwardly by means of a plate,126 and the plate 29. This last brick which is indicated by. the numeral ,127,-Figure9, is pushed into position by the next incoming brick in the regular manner. 7

Thus it will be seen that the lefthand end of the paving is laid with thespace for a half brick in :each alternate row. These half spaces are filled in manually afterthe machine has passed on; The right hand end of the paving, however, is completely filled in. i

The plate 111 is actuated bymeans of a rod 128 extending forwardly and having its forward end pivotally connected to a rock arm 129 which is caused to move yieldingly rearwardly by means of a spring 130.

The arm 129 is mounted on one end of a shaft 131, the opposite end of which is provided with a finger 132 designed to be engaged by a pin 133'mounted on the gear 7 position.

In practice I pile the brick alongthe side of the road bed outside'of thecurbingin small"'piles which are convenient-"for the attendant to grasp so they may be placed on the conveyor with the least amount of exertion, the whole brick being placed on one side of the road bed and the half brick on the opposite side.

By making the beam 12 adjustable relative to the frame, I have provided means whereby the same mechanism is adapted to lay paving of different widths but in a predetermined range. I have found in actual practice that the conveyor 26 does not need to overhang the beam 12 much more than eight or ten feet at any t1me, as eight or ten feet is generally all the variation in the ordinary road beds.

I claim as myinvention:

1. A brick laying machine comprising a main frame, a support for said frame comprising a fixed beam and an adjustable beam,

a pair of flanged wheels for each of said beams, a gravity feed conveyor for whole bricks at one end of said frame, a gravity feed conveyor forhalf bricks at the other end ofsaid frame, a transverse receiving plate, means for feeding the bricks from the first said conveyor and arranging them in transverse rows on said receiving plate,

and means for delivering thenrfrom the lastsaid means to the road bed, and means for feeding a half brick to each alternate row of bricks. g

2. A brick laying machine comprising a main frame, a support for said frame comprising a fixed beam near one end of said frame and an adjustable beam near the other end of said frame, roller supports for each of said beams, said beams being arranged longitudinally with the respective outer edges of a road bed, an 1ncl1n ed gravity feed conveyor parallel and ad acent to the fixed beam, an inclined gravity feed conveyor paralleland adjacent tothe adjustable beam, a downwardly and rearwardly curved plate extending between said supporting beams, the rearend of said plate being substantially level with the road bed, means for feeding bricks from the first said conveyor transversely upon said inclined plate in rows, means for feeding the transverse rows of bricks on said plate rearwardly and at the same time advancing said machine forwardly, and means for feeding half brick from the second conveyor to each alternate transverse row of bricks. V

3. A brick laying machine comprising a main frame, meansfor supporting said main frame. wheels for said supporting means, said wheels being designedqto rest on the top edge of the curbings of a road bed, means for adjusting saidsupporting means toward or from each. other so that brick may be laid in road beds of different widths, a feed conveyor at each end of said frame, means for feeding bricks from said feed conveyors to a road bed in transverselyarranged rows between said curbings, one of said feed conveyors being designed to resaid transversely arranged rows of brick may be varied to meet road beds of various widths.

5. A brick laying machine comprising a main frame, means for supporting said main frame transversely above a road bed, a.

downwardlyv and rearwardly inclined conveyor adjacent to one end of said main frame designed to receive a row of transversely arranged bricks and to feed them by gravity to its lower end, means for limit ing the backward movement of said bricks, a plate arranged transversely across and above said road bed, said plate being in- CllllGTl downwardly and rearwardly to terminate at a point substantially level with the road bed, a movable plate extending perpendicularly above said downwardly and rearwardly extending plate, means for moving bricks from said conveyor to said transverse plate and adjacent to said movable plate, means for raising and lowering said movable plate, a ram for forcing the rows of bricks formed on said transverse plate rearwardly, and means for operating the above said means.

6. A brick laying machine comprising .a main frame, means for supporting said main frame transversely above a road bed, a combined hopper and gravity conveyor at each end of said main frame, one of which is designed to carry whole bricks and the other half bricks, means carried by said main frame for receiving brick. from the hopper carrying the whole bricks and delivering them to the road bed in transversely arranged rows, and means for delivering the half bricks from the other one of said hoppers to each alternate row of bricks, and means for automatically operating the above said means.

7. A brick laying machine comprising a main frame, means for supporting said main frame transversely above a road bed, wheels for said supporting means, said wheels beingdesigned to run on the top of the curbings at the sides of the road beds, one of said supporting means being adjustable to and from the other supporting means, a downwardly and rearwardly inclined conveyor adjacent to-one end of said main frame designed to receive a row of trans versely arranged bricks, and to feed them by gravity to its lower end, means for limiting the backward movement of said brick, a plate arranged transversely across and above said road bed, said plate being inclined downwardly and rearwardly to terminate in a point substantially level with the road bed, a movable plate extending perpendicularly above said downwardly and rearwardly extending plate, means for moving bricks from said conveyor on to said transverse plate and adjacent to said movable plate, means for raising and lowering said movable plate, a ram for forcing the row of bricks formed on said transverse plate rearwardly, means for throwing said brick feeding means out of gear after a complete row of bricks has been formed, and means for throwing said ram and said movable plate operating mechanism in gear.

8. A brick laying machine comprising a main frame, means for supporting said main frame transversely above a road bed, wheels for said supporting means, said wheels being designed to run on top of the curbings at the sides of the road bed, one of said supporting means being adjustable to and from the other supporting means, a downwardly and rearwardly inclined conveyor adjacent to one end of said main frame designed to receive a row of transversely arranged bricks, and to feed them by gravity to its lower end, means for limiting the backward movement of said brick, a plate arranged transversely across and above said road bed, said plate being inclined downwardly and rearwardly to terminate in a point substantially level with the road bed, a movable plate extending perpendicularly above said downwardly and rearwardly extending plate, means for moving bricks from said conveyor on to said transverse plate and adjacent to said movable plate, means for raising and lowering said movable plate, a ram for forcing the row of bricks formed on said transverse plate rearwardly, means for throwing said brick feeding means out of gear after a complete row of bricks has been formed, means for throwing said ram and said movable plate operating mechanism in gear, a rearwardly and downwardly inclined conveyor at the opposite end of said main frame in a horizontal plane above the first conveyor, and means for feeding half bricks on the last said conveyor transversely and inwardly above a row of bricks being fed by the first said conveyor, and means for dropping a half brick from the row above into the one below as each alternate row of bricks is formed by the first feeding mechanism.

9. A brick laying machine comprising a rectangular frame, means for supporting said frame transversely above a road bed, a downwardly and rearwardly extending gravity conveyor at each end of said frame, each of said conveyors being designed to receive a longitudinal row of transversely arranged bricks, a plate for forming transversely arranged rows of bricks above the road bed, and means for successively moving bricks from one of said conveyors on to said row forming plate, and means for delivering the row of bricks formed on said plate laterally as a whole to the road bed, said means being designed to advance the machine forwardly, and means for feeding a half brick from the other feed conveyor to each alternate row of bricks so that the adjacent rows of bricks will be arranged in staggered relation relative to each other.

Des Moines, Iowa, March 3, 1922.

HALVER R. STRAIGHT.

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