US1181289A - Protecting-shield. - Google Patents

Description

C. BURDAHL.

PROTECTING SHIELD..

APPLICATION FILED SEPT. H. 1915.

5 SHEETS-SHEET I.

v awvc m fog- 2 1 389, Patented May 2, 1916.

C, BURDAHL.

PROTECTING SHIELD.

APPLICATION FILED SEPT. l I, 1915.

Patented May 2, 1916.

5 SHEETSSHEET Z- Y C. BURDAHL.

PROTECTING SHIELD.

APPLICATION FILED SEPT. 11. 1915.

Patented May 2, 1916.

5 SHEETS-SHEET 3 140014 You Sitar/"e1 M m 7617/ I C. BURDAHL.

PROTECTING SHIELD.

APPLICATION HLED SEPT. (1, I915.

Patented May 2,1916.

5 SHEETS-SHEET 4 anocn to;

C. BURDAHL.

PROTECTING SHIELD. APPLICATION FIYLED SEPT. 11. I915.

1,181,289. "Patented May 2,1916.

5 SHEETS-SHEET 5- UU Umuuuuuuuuuuuuuuuuu ing-"a'gfoot guard upon oneside of the :plate. so that the same will not in any way int'er tector for the legs and 'feet of the soldier. Y The invention has for a further ob] ect to CHRESTIA'N BURDAHL, or MINnEAPoLIs, MINNESOTA.

\ PROTECTING-SHIELD.

Specification of LeFtePs Patent. Patented lua 2 1 916 Applicationfiled september 11, 1915. Serial 1fIo.- 50;26'3.

To all whom it may concern Be it known that I. CHRns TIAN BUR'- DAHL, a subject of the King of Norway; re;

siding at Minneapolis, in the county of I-Ien nepin and State of Minnesota, have invented certain new and useful Improvements Protecting-Shields, of which the following is a specification, reference-beinghad' tOthe accompanying drawings. v This invention relates when anchored in when 1n motion. r The invention has for one of ts more 111 'portant objects to provide a rolling shield" for the above purpose, consisting of a circue lar metal plate of requisite thickness and f p u ,use; Fig; 10: s'an enlarged-front elevation; i

diameter, and improved means for suspend fere with the free rolling movement- .0

the plate and will provide an a-uXiliary proclosure plate -fortlfe loop holes in, plan, side provide a circular track mounted upon oneside of the-shield plate, a hanger provided with a roller to travel on said track, the foot guard being pivoted upon the lower end of to an improved pi o' tecting shield for use by soldiers in warfare"- and has for its primary object to provide'a shield which may be easily rolled uponrtlie ground by the soldier and will afiord atom. plete'protection to the body of thelsoldier.

a stationary position or h "'With the aboveand other 'objects in'view,

my invention; consists in the novel features f-construction; combination ,and 'arrangementrof-partsto bef'hereinaftrjmore:fully described, cla'imed and illustrated the yi.ceompe y 1mwings,'in which, I

Figure-. :1; side elevation illustrating I "the mannerfil i y. p e jro linek l 1d; -F1g; 2=1s asimilar viewthereof showlag-theshield "in position to be rolled, upon the" ground; Fig.2 isia' front' elevationfofj the shleld; Fig. i' 1s-a2rear.elevation thereof; F1g. ;5- s-a. sim lar 'view-showingithe tion 'with'the shield set" up in "position for Fig'.-11-'is a detailyelevation of thefoot guardradjusted' 0, ailiin'clined pos1'tion' ;-Fig"-.,

{61's. airear eleation', the foot guard being p l lgits efl'ective position "in full-lines;

and inf-an elevatgdfposition in dotted. lines; Fig; .7 is-an'enlarged'f'rearelevation 0f the 1 shield; Eig. "8-fi s a vertical diametricalj-sec .tional view 'Fig. 9' is-ajnenlargedside elevaand" 13 respeetivly illustrate". the "sliding 1 elevation, and end views';IFig s." 14; and 14 are sections taken on theulines and the hanger, and means for raising or lower-\fo r the standards or anchors; Fig. 16 is a ing the foot guard or tilting the same so that the guard will drag'at one end upon the ground in the rolling movement of the shield, whereby a continuoustravel-of the hanger roller upon the track-is assured and jerky or uneven motion eliminated; It is another important object-of the invention to provide improved anchors or supports for the rolling shield plate whereby the same may be firmly and rigidly set up in position upon the ground,-and means for mounting and securing said supports upon one side of the plate when the same is to be rolled or moved from place to place.

The invention has for a further general object to provide a device-of the above char detail sectional view taken on the line 16j'l6 of Fig. 7; Fig.1? is a. sectiontaken on the larged plan; view with'certainpf the parts line 17 17 of Fig. 7; Fig. 18'is a. section taken at right'angles to Fig. 17 Fig..19 is fan edge view of the hanger; Fig. 20 is a 'side elevation of the hanger; Fig. '21 is "an edge view'of the toothed quadrant; Fig. 22

and 2424 of'Figs. 21 and 22 respectively;

Fig. 25 is a detail elevation of the rack quadrant fpr holding'thetilting lever; Fig. 26 is a sectional view thereoftaken on the'line View illust'a-ting the manner in which the actor which is of such construction that mo -rolling shie ds are moved over a field by a same may be freely moved over a field by a troop of soldiers operating in unison against an enemy in the execution of military tacties, the shields being capable of very rapid troop of soldiers. in approaching an enemy. In the accompanying drawings, I have illustrated what I believe to be the pre- "ferred embodiment of my invention, wheressrolling movement in any desired direction. in 5 designates the rolling metal shield 95 I is a side elevation thereof; Figs. 23 and 2 4 are sectional views taken on the 1ines23-23 and a broader bearing contact surface with.

the ground. For the purpose of conveniently balancing the plate when rolling the shield upon the ground, I provide a horizontally disposed rod or shaft 9 which is rigidly fixed at one of its ends to the center of the shield plate by means of the nuts 10 having clamping engagement against the opposite faces of the plate. This rod projects real-wardly and is braced by means of a diametrically disposed bracket bar 11 which is riveted at its extremities to the plate 5. The medial portion of the bar 11 is disposed in parallel relation to the shield plate and provided with a central opening therein through which the rod 9 extends. A second bracket bar 12, having a similar rod receiving opening, is disposed in a plane at right angles to the bar 11 and riveted to the plate at its ends, Between the bar 12 and the nut which bears against the inner face'of the plate 5, a metal sleeve 13 is arranged upon the rod' 9 and securely fixed thereto by means of the set screw 14. This sleeve is provided for the purpose of taking up longitudinal thrust upon the rod 9. In spaced relation to the bracket bar" 11, a collar l5 is'fixed upon the rod 9 by means of the set screw 16. A metal tube 17 is loosely engaged upon the rod 9 and bears at its inner end against the collar 15. The sleeve 18 is exterior-1y threaded upon the rear end of the tube. A washer plate 19 is engaged upon the. threaded stud 20 projecting from the end of the rod 9 and is tightly held against said rod and the end of the tube 17 by the nut 21. A metal thimble or bushing 22- is also engaged in the end of the sleeve 18 against said washer plate. The tube 17 revolves freely upon the rod 9 and, in operation, one soldier grasps said tube, holding it horiz ontally an thereby. placing the shield plate in a vertical position while the other soldier turns the plate by grasping the circular track 23 to be later referred to, and exerting lateral pressure thereon. The shield thus turns or'rolls over the ground and, "in proceeding as indicated in Fig. 28,

the soldiers take turns rolling the shield plate, thereby giving each man an opportunity to rest while balancing the shield. Upon the rear face of the plate 5 and in spaced relation thereto,.a ring or annulus 23 is mounted in concentric relation to the Sl'llElCl plate. This ring is preferably supported by a plurality of bolts 24 mounted at one of thelr end in the plate 5, and upon said bolts, bet een the ring 23 and the face of the plate 5, the spacing sleeves 25 therein.

'shaped bracket plate is fixed to the hanger 26 at one of its ends and has its other angular end portion engaged over the inner face of the ring 23 at the outer edge thereof, said bracket serving as a guide and preventing outward swinging movement of the hanger. The lower end portion of the hanger 26 is slightly increased in width'and is formed with an upwardly projecting returned end portion 31. The end of a lever 32 is arranged between these spaced lower end portions of the hanger plate and fulcrumed upon a bolt 33 fixed in the hanger. The particular purpose of this lever 32 will be hereinafter explained.

In conjunction with the circular shield plate 5, I employ an auxiliary shield or This auxiliary guard consists of an elongated metal plate 34 which extends across the rear face of the plate at its lower portion. The extremities of this plate 34 are of U-shaped form and provided with the spaced upwardly projecting terminals 35 having laterally and inwardly extending arms'36 which project over the front face of the shield plate 5, as clearly shown in Fig. 10 of the drawings. A bolt 37 is engaged in the guard plate 34 at its center and adjacent the lower edge thereof, and upon said bolt the toothed quadrant 38 is mounted. This quadrant, shown in detail in Fig. 27 of the drawings, 1s provided adjacent to its toothed edge wlth an arcuate slot 39 and also has a flange 40 formed upon its vertical edge. This flange is provided with oppositely projectmg spaced lugs 41 arranged in pairs. A toothed quadrant 42, shown in Figs. 22 and 23, 1S also provided for the lever 32, said lever carrying the usual spring pressed dog forengagement with the teeth of the quadrant. This quadrant 42 is also formed with a flange 43, said flange being rovided with parallel longitudinally extending slots 44 and 45 respectively. Through the slot 45, the lever 32 extends, and in the'slot 44 the lugs 41, projecting from one side of the flange 40 on the quadrant 38, are slidably engaged. The hanger plate 26 is also formed upon one edge with a flange 46 whichis disposed in parallel relation to the flange 43 and also has alorlgi'tudinal slot 47 formed This slot receives the oppositely pro ecting lugs 41 of the quadrant plate In the guard plate 34 a'bolt 48 is fixed at one of itsendsand projects through the arcuate slot'39 in theplate 38 and also through an opening provided in the lever 49 which'is fulcrumed at one end upon the bolt 37. A rectangular guide plate 48 is engaged upon the bolt 48 and movable in the slot and a second rectangular plate 48 is also engaged upon the bolt between the lever 49 and the quadrant 38. This lever, of course, carries a locking dog for engagement with the teeth of the quadrant plate 38. The flange of the quadrant 38 is provided with a slot'or opening 50 through which the pivoted lever 32 extends. It will thus be seen that, by simply manipulating this lever upon the quadrant 42, the guard plate 3% will be raised or lowered, as the lever 32will bear against one of the end walls of the slot 50 in the flange of the quadrant 38 which is attached to said guard plate.

Theguard plate 34, tending to gravitate downwardly and the sheave or roller 28 traveling freely upon the track 23, causes the roller to at all times maintain aposition on the lowest point of said track. If the sheave were thus permitted to travel freely upon a circular track in the rolling movement of the shield plate, the shield, upon being turned,

would cause the sheave or roller to move upon the track in a series of jerky motions, thereby tending to bind the foot guardso that it would be carried around with the shield. In order to overcome this binding strain, I have provided the pivoted lever49 which is-connectedv at a medial point to the guard plate 3-l in the manner above stated.

TV hen this lever is moved in either direction from a central position with respect to the slot 39 in the quadrant plate, the foot guard will be tilted and thrown off balance, as indicated in dotted lines in Fig. 4 so that there will be 51 greater weight at one end of the guard-than at the other, in accordance with the direction of travel of the rolling shield. This tilting of the foot guard causes the lower end to drag slightly upon the ground, whereby, in the continued turning movement of the shield, this dragging Weight will force the sheave or roller 28 upwardly upon the curved track. The roller being thus moved oli" center and placed upon an incline, will immediately gravitate downwardly upon the track back to its central position. This action is constantly repeated in the rolling movement of the shield; As the foot guard drags at one end upon the ground, its downward movement will be retarded and regulated, thereby causing the sheave or roller to travel at an even speed upon the track corresponding to the rolling speed of the shield. When the shield is moved up or down an incline, the guard is further tilted, as indicated in Fig. 5, so that it is disposed in approximately parallel relation to the ground surface, and when the shield is rolled over uneven or broken ground, the foot guard will be elevated as in Fig. 6, by the Jar openin 67 of simi ar shape on one end of a bolt 68 manipulation of the lever l/Vhen it is desired to set up the shield in a stationary position, the lever 32 is operated to lower the foot guard so that its lower edge will contact firmly with the ground and provide a complete shield and protection from rifle tachable supports or standards51, each of which consists of an angle bar terminating at one end in an angularly disposed pointed foot plate 52 which is adapted to be securely embedded in the ground. The other end of each angle bar is provided with a metal block 53 of rectangular form, from the opposite faces of which spaced studs 54 project. ter and on opposite sides thereof adjacent the flange 7, rectangular openings 55 are provided. Through these openings, the ends of the supporting standards carrying the blocks 53, are engaged, and the lugs 54 disposed against the opposite faces of the shield plate. The standards 51 are then disposed at the desired inclination and forced inwardly toward each other, causing the same to bind against the opposite edges of the openings 55 and the tapering foot plates 52 are then forced into the ground. Thus, the circular shield plate will be rigidly sup- In the shield plate 5, above its cene ported in a stationary position. I have also devised very simple and convenient means on the rear face of the shield plate 5, upon The extremities of these bars 56 are secured to the rear ends of bolts 58 fixed in the shield plate 5, and metal sleeves 59 are arranged upon said bolts between the bars 56 and the rear face of the shield plate. Upon the ends .of'the bolts 58 whichare disposed throughcorresponding ends of the parallel plates 56, a plate 60 is engaged and tightly secured by means of the nuts6l'. Each of the plates '60 is centrally provided with a hollow cylindrical boss 62 and one end of the plate 60 is angularly formed and, to the same, a hasp member 63 is him edl'y connected, as ind1- cated at64. This asp member is provided with an angular substantially U-shaped portion 65 to accommodate the boss 62, and in this medial portion of the hasp a rectangu- 66 is formed to receive a head I which the detachable standards 51 may be which extends axially through the boss 62 I and an opening in the plate 60. -'The hasp member 65 also ha openings 69 formed are provided with undercut grooves therein to receive the, ends of the bolts 58. After the supporting standards 51 are detached from the shield plate, they are arranged upon opposite sides of the boss'62 on the spaced plates 60, and one flange of each of the angle bars is provided with openings 7 0 to receive the ends of the bolts 58. The hasp member is now swung to its closed position, after which the bolt 68 is turned to dispose the head 67 thereon at right angles to the slot 66. A nut 71, threaded upon the opposite end of. this bolt, is then tightened against the face of the plate 60. It will thus be seen that, by the provision of these two fastening devices arranged on opposite sides of the central rod 9, the standards 51 will be securely-held upon the plate'5 as it is rolled over the ground. a

72 designates spaced rectangular loop holes which are cut in the shield plate 5 at one side of its center, and when the shield is mounted in a stationary position for use, as in Fig. 9, these loop holes will be above the center of the plate. Upon the rear face of the plate 5, theobliquely disposed parallel lips 73 areintegrally formed, one of said lips being located on each side of the loop holes 72. These lips constitute guides for a closure plate 74, the opposite edges of which are rabbeted, as'at 75. The li s 73 6 to receive the rabbeted edges of the closure late. Each of the lips 73 is also increased in width intermediate of its ends to provide a flange 77 which overhangs the body of the closure plate. The flange 77 on one of the lips is provided with spaced notches 78. Upon the face of the closure plate 74, spaced lugs 79 are formed, each of said lugs being bored to loosely receive the opposite ends of a locking pin 80. This pin is provided with a suitable finger piece 81 and a coil spring 82 is arranged upon the pin between said finger piece and one of the lugs 79. This spring normally acts to project the pin 80 through the other of the" lugs and into one of the sockets 78 in the guide lip. In Fig. 7 of the drawings, I have shown the closure plate on the left hand side of the shield in its open position while, on the right hand side of the shield, the plate is shown in closed position over the loop hole 72. By simply releasing the locking pin'80, the plate 74 may be easily and quickly shifted in either direction to open or close the loop holes.

From the above description of the construction of my improved rolling shield, it wil l he apparent that there is no impediment whatever to the free rolling movement of the circular shield guard device for the feet and legs'of the soldier is provided andpermanently conne ted. to the guard plate in such manner in a military maneuver.

plate while, "at the same time, a very efiicient auxiliary as to at all times maintain its pendant position with relation to said plate.

In Fig. 28 of the drawings, I have disclosed one desirable manner of moving the shields by, a troop of soldiers across a field In this figure I have illustrated an enemy trench at T which is protected at some distance in advance thereof by the wire entanglem t W. At the bottom of the sheet, I: have shown a series of the rolling shields S, each of which is operated by two soldiers, the diagram being thus indicative of an. attacking force upon the trench. By spacingthe shields apart and dividing the attackers into columns of two relays, each making short advances alternately, the attackers are af forded an opportunity of killing any reckless trenchman who may expose himself, and at the same time the men may obtain a period of rest from their efforts in rolling the shield. When the foremost line of shields is advanced to where they are safely beyond bomb throwing distance from the trench, as-indicated by the line of shields S, they stop momentarily and send out men at different points along the line to cut the wire entanglements WV, the remainder of the men in the time keeping up a steady fire to prevent bomb throwers interfering with the wire cutting operations. This lining up of the advancing troop gives the men an opportunity to rest for the final dash against a trench, which will occur after the wires have been out. It is, of course, understood that, when the shields are brought up to the adi'anced position, hand grenades, bombs, or other projectiles are supplied to the troops. With the wire entanglements cut, the shields are rolled forward toward the trench, the men moving alternately in diagonal "lines and scattering as much as possible S as to afford the men in the rear an opportunity of firing. With the use of bombs and a constant rifle fire from behind the shields, the shields are advanced to the very front edge of the trench so that the complete success of the attack is assured and with a minimum of loss of life among It will .thusbe seen that myimproved shield provides a complete and effective protection'for the attacking troops and, as

the shields' will freely roll over the ground with great speed after being once started, they will place no material additional burden upon the soldiers in advancing upon From fof'egoing description, it is believed that the'present invention will be fully and thoroughly understood;

The, device as a whole is comparatively- I 1, 2 and 3 of the drawings, the metal shield plate 5 is preferably of such diameter that it will completely shield a. man of averageheight when in a kneeling position. The

rifle loop holes provided in the shield plate are of such size as to enable the rifle to be readily inserted therethrough and give sufficient clearance space so'that the sight may be drawn along the rifle barrel. The barrel can also be readily disposed at various angles through the loop holes. The track 23,

theless, susceptible of considerable-modifica- I inaddition to constituting a support for the hanger 26, also serves as a convenienthand hold whereby the rolling shield plate may be propelled over the ground.

\Vhile I have shown and described the preferred construction and arrangement of the several features of my invention, it is to be understood that the deviceis, nevertion therein and I, therefore, reservethe privilege of adopting all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed.

Having thus fully described my invention,

foot guard mounted upon one side of said.

plate.-

A circular metal shield plate adapted to be rolled upon the ground, a pendant foot guard mounted upon one side of said plate, and means for vertically adjusting said foot guard with respect to the shield plate.

3. A circular metal shield plate, balancing means centrally connected to the plate, said plate being provided with spaced loop holes, means for supporting the plate in a stationmy position upon the ground, and means on said plate upon which said support ng means is adapted to be mounted and carried with the plate when the latter is rolled.

4. A circular metal shield plate adapted to be rolled upon the ground, a pendant foot guard mounted upon one side of said plate, and means for positioning the foot guard at an oblique angle with respect to the shield plate.

5. A circularv metal shield plate adapted *"to be rolled upon the ground, a pendant foot guard mounted upon one side of said plate, means for positioning the foot guard at an oblique angle with respect to the shield plate, and additional means for vertically adjusting the foot shield plate.

6. A circular shieldplate provided, upon its outer edge with a ground engaging flange, balancing means centrally connected guard with respect to the to said plate, detachable supports adapted to be operatively connected at one of their ends to sa d plate. and anchored at their other ends in the ground, and means carried by the shield plate in which said detachable supports are adapted to be mounted to be carried bythe plate in its rolling movement.

7. A circular shield plate provided with means for rolling the same upon the ground, and a suspended foot guard mounted upon one face of said plate and adapted for engagement with the ground surface when the plate is stationary.

8. A circular sk eld plate provided with means for rolling the same upon the ground, a suspended foot guard mounted upon one face of'said plate and adapted for engagement with the ground surface when the plate is stationary, and detachable supports adapted to be connected tosaid plate at one of their ends andembedded in the ground at their opposite ends.

9. A circular metal shield plate provided with means for balancing the same, an annu-- lar track mounted upon one face of said plate and affording means for rolling the plate, and a foot guard suspended from said track to maintain a substantially stationary position when the plate is rolled over the ground.

10. A circular metal shield plate provided with means for balancing the same, an annular track mounted upon one face of said plate and affording means for'rolling the plate, a foot guard suspended from said track to maintain a substantially stationary position when'the plate is rolled over the ground, and means for lowering said foot guard into bearing engagement with the ground surface or elevating the same out of contact therewith.

11. A circular metal shield plate provided with means for balancing the same, a track mounted upon one face of the shield plate and affording means for rolling the plate, a hanger suspended from said track, a foot guard mounted upon the lower end .of the hanger, and means for adjusting said foot guard with respect to the hanger.

12. 'A circular metal shield plate providedwith means for balancing the same, a track with meansfor balancing the same, a traclc mounted upon one face of the shield plate and'affordmg means for rolling the plate, a

hanger suspended from said track, a foot guard, and means for adjustably positioning the foot guard upon the hanger to cause one end of the guard to drag upon the ground as the shield plate is rolled, whereby the hanger is moved with respect to the track and caused to gravitate downwardly thereon to its normal position.

. 14. A circular metal shield plate provided with means for balancing the same, an annular track mounted upon one face of said plate and affording 1neans for rolling the .plate, a hanger provided with a roller to travel upon said track, a foot guard, a plate carried by said guard, and a lever mounted uponthe hanger and cooperatively engaging said plate to raise olnlower the foot guard with respect to the ground surface.

15. A circular metal shield plate, an annular track mounted upon one face of said shield plate affording means for rolling said plate, a hanger provided with a roller to travel upon said track, a. foot guard, a plate upon which said foot guard is pivotally mounted, a lever fulcrumed upon the hanger and cooperatively engaged with said plate to raise or lower the foot guard, and a second lever connected to said foot guard to tilt the same to a horizontally inclined position with respect to the hanger.

16. A circular metal shield plate, an annular track mounted upon one face of said shield plate affording means for rolling said plate, a hanger provided with a roller to travel upon said track, a foot guard, manually operable means mounted on the hanger and cooperatively engaging means on the .foot guard to raise or lower the latter, and

additional manually operable means to tilt I the foot guard and dispose the same in a horizontally inclined position with respect to the hanger.

17. A circular metal shield plate provided with means for rolling the same over the ground, and a foot guard permanently carried by said plate and operatively connected thereto by means which will maintain the foot guard in a substantially constant position with respect to the shield plate as the latter is rolled over the ground.

18. A circular metal shield plate provided with balancing means, an annular track mounted upon one face of said shield plate,

a hanger provided wlth a grooved roller to travel upon said track, a quadrant vertically slidable upon the hanger, a foot guard pivoted intermediate of its ends upon the quadrant, and a manually operable lever pivotally mounted upon the hanger and co-acting with the quadrant to shift the same upon the hanger and raise or lower the foot guard. 19. A circular metal shield plate provided with balancing means, an annular track mounted upon one face of said sh eld plate, a hanger provided wlth a grooved roller to travel upon said track, a quadrant vertically shdable upon the hanger, a foot guard pivlever whereby said foot guard may be disposed in a horizontally inclined position with respect to the hanger.

20. A circular metal shield plate provided with means for rolling the same over jl-e ground, said shield plate being provided at opposite points adjacent its outer edge with rectangular openings, and supporting standards adapted to be detachably engaged through said openings at one of their ends for binding engagement with the opposite edges of the openings, said standards being provided with spaced lugs for frictional contact against opposite faces of the shield plate and the opposite ends of the standards terminating in pointed feet to be embedded in the ground.

21. A circular metal shield plate provided with means for rolling the same over the ground, detachable supports adapted to be connected to the shield plate at one of their ends and engaged in the ground at their other ends, bolts fixed at one of their ends in the shield plate, said supports being provided with openings to receive said bolts, and hinged clamping members -m0unted upon the bolts and embracing said supports when arranged upon the bolts to clamp the supports in position for movement with the shield plate when the latter is rolled upon the ground.

22. A circular-metal shield plate, an annular track mounted upon one face of said 'plate and affording means for rolling the plate over the ground, and a. foot guard suspended from said track to maintain a substantially stationary position in the rolling movement of the plate.

23. A circular metal shield plate adapted to be rolled upon the ground, a foot guard mounted upon one side of said plate, and

means for adjusting said foot guard to position the same with respect to the edge of the shield plate.

2i. Acircular metal shield plate adapted to be rolled upon the ground, a foot guard, means formounting said guard upon one side of the shield plate whereby the guard Will maintain a substantially constant position with respect to the plate during the rolling movement of the latter.

A circular metal shield plate adapted to be rolled upon the ground, a hanger, means for suspending said hangerfrom the shield plate whereby the hanger Will maintain a substantially constant vertical position during the rolling movement of the signature.

CHRESTIAN BURDAHL.

Eagles of this patent may be obtained for five cents each, by addressing the Commissioner of .gatents,

' Washingtozxlfi.

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