Патент USA US2411317код для вставки
Nov. 19, 1946. 2,411,317 w. P. DAY :rAL PNEUMATIC HAND TROWEL Filed July 15, 1944 5 Sheets—Sheet 1 NMb4QNNMNHWN WM _ __ 0. __ ___ Nov. 19, 1946. V w. P. DAY ET AL 2,411,317 PNEUMATIC HAND TROWEL Filed July 15, 1944 3 Sheets-Sheet 2 INVENTORS. WILLIAM P. DAY JOHN J. DAY- ' WILLIAM P. DAY.,JR VlNCENT agdzsmw. Nov. 19, 1946. WP, DAY ETAL 2,411,317 PNEUMATIC HAND TROWEL Filed July 1;, 1944 . I I :0 a _. 0.1 I 19 ~ I s Sheets-‘Sheet s q 23 ,_ 34 - 0 INVENTORS. WILLIAM - P. DAY. JOHN .1. DAY. _ WILLIAM P. DAY_.,JR. VINCENT E. HEGLAW. Patented Nov. 19, 1946 2,411,317 UNITED STATES PATENT ‘OFFICE * William P. Day,‘ Cleveland Heights, John J. Day, Shaker Heights, William P. Day, Jr.,_ Cleveland Heights, and Vincent E. Heglaw, East Cleve land, Ohio Application July 13, 1944, Serial No. 544,659. 3 Claims. (CI. 94-48) 2 This invention relates to a hand‘ trowel for spreading and compressing a layer of mortar or concrete mix and which is provided with power operated means for imparting. rapid and violent vibrations to the layer of mix whereby to cause such layer to settle and to. eliminate Voids and shown in Fig. 1'; ' ‘One of the objects ofv the invention is to pro or turbine; Fig. 2 is a vertical sectional‘ view on the line 29-2 of; Fig- 4; Fig. 3‘ is a top plan. view of the trowel shown in Figs. 1 and 2.; ' Fig. 4 is a view in end elevation of the trowel air pockets. Fig. 5 is a detail view in elevation of the rotor vide. a hand trowel for spreading and compress ing a layer of concrete which includes a pneu Fig. 6 is av vertical sectional View on the line 10 matically operated rotor having an eccentrically weighted portionand which is driven at high speed so as to impart rapid and violent vibra 6-6. of Fig. 5;. Fig. '7 is a bottom plan View on a reduced scale of the trowel‘ shown in. Fig. 1 and having secured thereto a trowel for use in imparting vibrations to a. concrete column; Fig. 8 is a view of the trowel taken at right tions to the‘ layer of concrete in a plane sub stantially parallel with the surface of the layer. A- further' object of the invention is to pro angles to Fig. 7;. vide a hand tool or trowel for spreading, com pressing‘ and vibrating a layer of concrete and which is adapted to. be secured to the trowel for which includes a vibrator unit in the’ form of an. air driven turbine having an eccentrically forming and vibrating curbing; weighted- portion so disposed that rapid and violent vibrations. will be imparted to a layer of concrete mix in a' plane substantially parallel with the horizontal surface. the attachment shown in Fig. 9; Fig. 10. is a fragmentary view in elevation of ' Another object of the invention is to provide _ trowel: for; spreading. and'vibrating a layer of concrete. mix and which. comprises a light weight casting having mounted therein‘ an air driven turbine for imparting. rapid and violent, vibrations thereto. Fig. 1.1‘. is a view in side elevation of'the trowel and attachment shown in Figs. '7' and 8;. Fig. 12‘ is a fragmentary View of another form of' tool‘ or implement for vibrating concrete; Fig. l3is a fragmentary view in elevation of the. tool. shown in Fig. 12; V Fig. 14 isa. fragmentary view in elevation of 30 Another object of‘ the invention is to provide a; hand‘, trowel: for spreading, compressing and vibrating; a layer of concrete, the working face i Fig. 9. is a view in end elevation of. a tool another form of tool used for vibrating concrete; Fig. 15 is. a side view of the tool ‘shown in Fig. 14-; Fig. 16 is a. View partly in section and partly in. elevation. showing the manner‘of using the of: the. trowel. including an inclined portion and trowel to impart vibrations to aconcrete column a. contiguous flat portion, such trowel being 35 whil'e itis being, formed; provided with power operated. means for. im Fig.1’? is a view partly in elevation and partly parting rapid and violent vibrations thereto in in. sectionshowing. another. use of the. trowel for a-plane substantially parallel with the. working imparting vibrations to a. concrete floor being. face of.‘ the-trowel. formed; A» still further object of the invention is to 40 Fig. 131s a view‘ in elevation showing another provide- a trowel for compressing and spreading form of 'tool or attachment that may be applied a; layer of concrete and which is provided with to the trowel for imparting vibrations to a layer means for ‘imparting rapid and Violent Vibra of concrete; and . tions thereto, such trowel being provided with 45 Fig. 19 is a top plan view of a still differentv form of attachment for applying vibrations to means for detachably. securing thereto any one alayer of. concrete. of several tools or implements which are Referring now to the drawings, the reference character. I designates a casting which is pref erably formed of light material such as alumi Further; and more“ limited objects of the in 50 num» or magnesium and which is generally of I vention; will. appear as; the description proceeds the shape shown in Figs. 1, 2 and 3. One end and by reference to the accompanying drawings of the casting is rounded, as indicated at 2, in which while the opposite end is pointed, as indicated Fig. 1 is a view in front elevation of our im at 3. Extending generally longitudinally of the proved trowel; 55 casting are a plurality of ribs indicated by the adapted to extend. into a mass of concrete to vibrate the same. ’ 2,411,317 . 5.5 ' - may be secured to the lower end of the rod 3|, if desired. This tool is particularly useful in spading and vibrating concrete in ?oors, as will appear from Fig. 17. The reference character 33 designates another form of tool which may be reference characters 4, 5 and 6. The working face of the trowel is provided with an inclined portion 1 and a contiguous straight or flat por tion 8. The inclined portion of the casting is provided with a plurality of ribs 9. The central ' portion of the casting is recessed and disposed attached to the rod 3|. . . . 4. I ‘ In Fig.<18 there is disclosed another tool or im therein is ajturbine, l0 shown in detail in Figs. 5 and 6. The turbine I0 is keyed to a shaft H which shaft is journaled in bearings 12 and I3. .» T > Disposed over the recess is a plate M which is secured in place by means of a plurality of bolts [5. The. casting is provided with a bore l6 into ' to.~ plement which may be attached to the vibrator and which consists essentially of a pipe 34 which is secured to the trowel by means of a strap 35. The pipe 34 extends a considerable distance be yond the ends of the trowel and is useful in ap plying‘vibrations to the surface of a large area of which leads an air line ll. l'nters‘ecting' the bore ' concrete. In Fig. 19 the pipe 34 is secured to the I6 is a bore is disposed substantially at right angles thereto. The bore l6 constitutes the inlet 15 trowel at right angles to the position shown in Fig. 18 and serves the same general purpose. port for the turbine and the bore I8 the exhaust It will now be clear that we have provided a port, it being understood that the air line I1 trowel which will serve to- spread, compress and is connected with a suitable source of pressure. . vibrate a layer of concrete and which will accom The reference characters It and 20 designate apair of plates which are preferably formed of 20 plish the objects of the invention hereinbefore stated. ‘Various changes may be made in the de-v rubber or similar composition and which are tails of construction and arrangement of. parts bolted to‘ the casting by bolts 2l.' Extending without departing from the spirit of our inven through the plates l9 and 2B is a, bolt 22 which is tion. The embodiments of the invention herein enclosed within a rubber sleeve 23. A nut 24 is threadedly secured to the bolt 23 and secures the 25 disclosed are to be considered merely as illustrae tive and not in a limiting sense as the invention same in place so as to provide a handle for man is limited onlyin accordance with the scope of ually operating the trowel.‘ ' ‘ the appended claims. . The reference character 25 designates a curved Having thus described our invention, what we plate’ which is shown in detail in Figs. 9‘ and 10 . and which has welded thereto a plurality of bars 30 claim is: 1. A tool for applying ‘a thin layer of concrete 26. , The bars 26 are secured to the casting by a plurality of nuts 21. The plate 25 is shaped and‘designed'so ‘as to engage a curved surface such as a curbing of a road'and serves to impart ' vibrations thereto. to an underlying layer and having a face adapted. for troweling, comprising a body having side walls and a bottom wall, vibrating mechanism mounted 35 in the body of the tool for imparting vibrations _ . In the operation of the trowel‘ a layer of con thereto, a member having a portion formed to ex crete, mortar or other suitable material is spread tend across the outside of said bottom wall and over the surface of a road and the trowel is placed portions extending up along the opposite sides of on this surface and ‘operated manually to spread, said body, said member including a portion ex compress and vibrate the layer. Due to the shape 40 tending laterally from said ?rst-named portion of the working face of the trowel, it will be,‘ seen for applying a concrete mix to an underlying sur that the concrete or mix passes under the inclined face, and means for removably securing said portion 1 and is compressed into a thinner layer. member to said body. ' . . " The trowel is preferably moved in the direction 2. The combination of a vibrating tool having indicated by the arrow in Fig. 4. .It is of course - vibrating means associated therewith and having to be understood that while the trowel is being a face adapted for troweling, said tool having a moved over the surface of the concrete, the tur body portion having a leveling surface for leveling bine or rotor is‘ being driven at high speed of the _ soft concrete, ridges extending along said surface, order of 5000 to 7500 revolutions per minute. a member adapted to be attached to said body By reference to Fig. 6, it will be seen that the r and extending laterally therefrom, said member rotor or turbine is provided with an eccentrically including a strap-like portion extending across weighted portion 50*‘ so that rapid and violent vi the leveling surface and lying intermediate and brations are imparted to the trowel in a plane in engageable relation with two of said ridges, generally parallel to the surface o-f‘the concrete. and means for releasably securing said strap-like The trowel is of light weight and is easily manipu portion to the sides of said body. I lated by one person. Several attachments are 3.. The combination of a trowel and vibrator for provided for the trowel which may be quickly se spreading and simultaneously vibrating a layer cured thereto or detached therefrom. of concrete mix including a body having a trowel In Figs. 7 and 8 there is disclosed an attach ing surface, ridges extending alongsaid surface, ment which is in the form of a strap 28 which 60 a member adapted to be attached to said body is ‘secured in place by means of bolts 29 and 30. and having a. strap-like‘portion which extends Secured to the strap, preferably by being welded thereto, is a rod 3| which is preferably made up of a plurality of sections threadedly secured to gether. This attachment is ‘particularly useful in applying vibrations to a column of concrete as across said troweling surface and lies'lintermedié ate and in engageable relation with two of said ridges, and means for releasablyv securing said strap-like portion toisaid body. it is being poured. It will of course be under ' WILLIAHM'IP. DAY. stood that any number of sections may be used depending upon the depth of the column. JOHN J. DAY. The reference character 32 designates a tool which ‘ _ ‘WILLIAM' P. ‘DAYQJR. ‘ VINCENT E. .