US1491934A - Tie-tamping machine - Google Patents

Description

April 29. 1924..

J. J. TIERNEY. TIE TAMPING MACHINE Filed Dec. 2, 1922 5 Sheets-Sheet 1 TIE TAMPNG MACHINE- Filed Dec. 2, 1922 5 Sheets-Sheet 2 VJ [/v V/v TOR o JOHN u. 775B NEY /YTTORNEYIS April 29, 1924. 1,491,934

J. J. Tir-:RNEY

TIE TAMPING MACHINE Filed Dec. 2, 1922 I5 Sheets-Sheet 3 IN VEN TOR JOHN QT WERNEY 5f @eL/Q, 63M@ F77' www? ms Patented Apr. 29, i924.

JOHN J. TERNEY, 0F VSLEEY EYEQMINNESOVTA, ASSGNOR OF ONE-THIRD TO* DES- MOND P. TIERNEY, OF SLEEPY EYE, MNNESOT'A. i i

TIE-TLPING MACHINE.

` Application filed December V2, 1922i Serial No. 664,515.

To all whom t 'may concern:

Be it known that l, JOHN J. TmRNEi, a citizen of the United States, resident of Sleepy Eye, county of Brown, and State of Minnesota, have invented certain new and useful Improvements in Tie-Tamping Machines, of which theV following is a specification.

This invention relates more particularly to machines designed for use in tamping or packing ballast under the ties of a railroad track.

In railroad construction, the ties to which the rails are spiked are embedded in ballast such as crushed rock, gravel or otherV suit able material, which is packed firmly under and against the ties to hold them securely in the proper position so that each tie will carry its portion of the load and provide a uniform support for the rails throughout their entire length. Owing to the severe use to which a railroad track is subjected unusual care is required in tamping or packing the ballast material under the ties so that f they will be uniformly and firmly packed to prevent them from becoming loosened and thus ineffective, due to the Weight and vibration of heavily laden trains moving rapidly thereover. It is also frequently necessary to repack the ballast around the ties of an old track for the purpose of straightening and leveling the track. Here` tofore, it has been customary to tamp the ballast by hand tampers or by the use of mechanical devices either carried by the operator or mounted on heavy trucks, but this method has not proven very satisfactory as some ties have been found to be packed more firmly than others, thereby causing the rails to settle in places and thus causing the track to become rough and unsafe for use.

The novel tamping machine shown in this invention is mounted upon a wheeled frame of light weight, and is particularly adapted to be used by section crews in repairing and maintaining tracks that are in service, such as repacking the ballast under ties that have become loosened and also to tamp the ballast under new ties that are substituted for those deteriorated or worn. lt may be operated either by hand or power as desired. When oWer-driven, the power is preferably: transmitted by a flexible belt from the usual'railway motor car connected tothe tamping machine by the usual draw-bar connection.

Due to its light Weight the machine may be s fully appear from the following detailed description and the accompanying drawings and will be| pointed out yin the annexed claims.

ln the accompanying drawing there has been disclosed a structure designed to carry out the objects of the invention, but it is to be understood that the invention is not conlined to the exact features shown, as various changes may be made within the scope of the claims which follow.

ln the drawings:

Figure l is a sectional View in side elevation, showing' the tamping blades lowered and in position to tampthe ballast under the tie. Y

Figure 2 is a similar view, but showing the tamping blades and frame raised to clear the ties for traveling on the railroad.

Figure 3 is a vertical sectional view on the line 3-3 of Figure 2, showing the tamping blades in a raised position.

ln the selected embodiment of the invention here shown, there is illustrated a tie-v tamping machine mounted upon supporting means, such as a wheeled frame or truck comprising a frame 6, axles 7 and the usual carrying wheels 8, adapted to rest and travel upon the usual rails 5 of a railroad track. Couplings 9, of usual construction, are preferably provided at each end of the frame 6, to al'ord means whereby the tamping machine may be coupled to a railway motor car, well known to theart, for the purpose of moving the machine along the railroad track. A platform 10 is preferably provided at one end of the machine for an operator to stand on to adjust the tamping blades while the machine is in operation.

A plurality of suitable supporting frames 11, carrying the tamping tools and operating mechanism, are adjustably mounted upon the truck frame', preferably by means of suitable bell-cranks l2 and lift linksl. These bell cranks, preferably four in num* (it)y llO the side beams of the frame 6, 'one of said l Vshafts being adapted to pass through and engage elongated openin s orslots`15, provided in thev vertical si e members' of the frames 11. A' similar shaft 14a is. rigidly mounted in the V'frame 6 and in like manner adapted to engage similar slots:V in the other vertical side members of the frames 11.

The functionof'the slots 15 is to. guideftheV framesll in their up and down movement and also to limit their movement. Each one of the four lift vlinks13 has its upper end pivotally connected to one arm of one of the fourbell cranks 12, thelower ends of these links being pivotally connected Vrespectively to one ofthe four ends of a pair of shafts 16, which are mounted to oscillate in suitable bearings 17 provided in the lower downwardly extending arms 18 which are preferably integral with the lower portions of the frames 11. The corresponding arms of the bell cranks 12, Von each side of the truck fra1ne,'are pivotally connected together by suitable connecting rods 19, shown in Figures 1 and 2. A hand lever20 is rigidly mounted upon the shaft 14,` adjacent the platform 10 and has a latch 21 of usual construction adapted to engagel a notched quadrant 22 secured to `one of the side beams of the truck frame 6. The function of this levery is .to raise and lower the supportingiframes 11 by means'of the bell-cranks 12 and lift links'13, hereinbefore described.

A plurality oftamping bars 23, having suitable tamping blades or tools 24 rigidly secured thereto, vare slidablymounted to reciprocate in suitable bearings 25 provided 4in brackets or yokes 26 fiXedly mounted upon the oscillatory shafts 16, as'shown in Figure 1. Pivot blocks'27 are secured to the tamping bars 23, preferably between the bearings25 of the yokes 26, and have pivot pins 28 rigidly 'mounted therein andjadapted to be respectivelyengaged by elongated apertures 29 provided in forked armsV 31, eachlloosely mounted upon a portion of one of a pair of shafts 32 secured to the sup-V porting frames 11. Arms 33 which arev preferably kintegral with the forked arms 31 and project inwardly therefrom, have their-ends pivotally connected by pins 34 to the lower endsof suitable connecting rods 35. The

'upper ends of the connecting rods are provided with capped bearings 36 mounted upon suitable eccentrics 37 secured! to a drive shaftr 38 rotatably mounted in capped bearingsV 39 in the supporting frames 1,1. It is preferred to employ squarebar iron in the construction ofvthe'tamping bars to prevent the, bars from turning aXially'vin. the bearings k25 which bearings' are correspondingly squared to receive they bars, vthereby always keeping the bottom or tamping edge of each blade 24 on substantially a horizontal line, j

Thus, upon rotation of the drive shaft 38 the connectingrods 35. will be reciprocated and thearms 33and 31 will similarly actuate the pivot 'blocks 27 and thereby cause the tamping bars 23 to move up and down in rapid succession and thus firmly pack the ballast under the ties. Means are also `provided whereby the tamping bars and blades maybe readily and'` quicklyv adjustedto conform to the width ofv eachy tie. A hand lever 40 having a' latch 41 (see Figure 2) is pivotally mounted upon ya pin 42 rigidly mounted in a bracket .43

which is secured to one, of the supporting frames 11 by any suitable means such as bolts 44. A notched quadrant 45 is supported by the bracket 43 and is adapted to be engaged by the latch 41 of the lever 40.

An armv 46, preferably integral with theV lower end of the hand lever 40, is pivotally. connected to one end .of a connecting rod 47 The other end of the connecting lrod'is similarly" connected to an arm l48 yrigidly mounted upon the shaft 16 beneathY the hand lever. A similar arm 49,` preferably integral with the arm 48, is ypivotally connected to' one end of a connecting rod 51 while theV otherend of this connecting rod is connected to a depending arm 52 secured to the other shaft 16. Movement of the hand lever 40 may therefore simultaneously `oscillate the two shafts 16 in opposite directions inl their bearings 17. The tamping bar-supporting yokes 26, being rigidly mounted upon these shafts, will correspondingly oscillate the tamping bars and blades, as

shown by dotted lines Vin Figure 2. A' drivey pulley 53, rigidly mounted upon the drive shaft 38, and a iieXible belt 54 are provided for the transmission .of power to the-tamping-machine from the usual railway motor to vary the timed relation of the downward working travel of the tools, such, forexample, asl to cause the tamping yblades to operate progressively'along both sides of the tie.

40. They may also be elevated or depressed by means of the hand lever 20 while themac `The tamping blades maybe adjusted to` and from the tie by an operator standingV on the platform by means of the hand lever.

chine is in operation, thus permitting the required adjustments to enable the device to be universally used for packing ballast under the ties of any railroad.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. A tie-tamping machine including a supporting means, a plurality of tamping tools mounted to reciprocate on the supporting means and adapted to tamp adjacent the sides of ties, a member rotatably borne by said supporting means, eccentric means on said rotatable member, and driving connection between said tools and said eccentric means whereby, upon rotation of said member, the tools are reciprocated.

2.y A tie-tamping machine including a supporting means, a plurality of tamping tools mounted on the supporting means to reciprocate in opposed pairs and adapted to tamp opposite sides of ties, a drive-shaft rotatably borne by said supporting means, eccentrics on said drive-shaft, a driving connection between each tool and an eccentric whereby,

upon rotation of the drive shaft, the tools areV reciprocated.

3. A tie-tamping machine including a sup porting means, a plurality of tamping tools mounted on the supporting means to recip rocate in opposed pairs and adapted to tamp opposite sides of ties, a member rotatably borne by said supporting means, eccentric means on said rotatable member, and driving connection between said tools and said eccentric means whereby, upon rotation of said member, the tools are reciprocated, said eccentric means being arranged to vary thek timled relation of the working travel of the too s.

A. A tie-tamping machine including a supporting means, a plurality of bearings pivotally mounted upon the supporting means in opposed pairs, a tampingtool reciprocably mounted in each bearing and` adapted to tamp on one side of a tie, a rotatable member mounted upon the supportingy means, eccentric means onsaid member, ardrivirig connection between each tool and said eccentric means whereby, upon member rotation, each tool is reciprocated, and means to alter said pivoted bearings to change the tainping position of each tool.

5. A tie-tamping machine including a supporting means, a plurality of bearings pivotally mounted upon the supporting means, in opposed pairs, a tamping tool reciprocably mounted in each bearing and adapted to tamp on one side of a tie, a rotatable member mounted upon the supporting means, eccentric means on said member, a driving connection between each tool and said eccentric means whereby, upon member rotation, each tool is reciprocated, means to alter said pivotal bearings to change the tamping position of each tool, and means connecting to gether opposed pairs of bearings for simultaneous pivotal movement whereby the bearing of each pair is simultaneously altered.

In witness whereof, I have hereunto set my hand this 24th day of November 1922.

JOI-IN J. TIERNEY.

Images