US2105030A - Saw - Google Patents

Description

R. M. DUNHAM Jan. 11, 1938.

SAW

Filed Nov. 16, 1956 2 Sheets-Sheet l 2 Sheets-Sheet 2 R. M. DUNHAM SAW Filed NOV. 16, 1936 Jan. 11,1938.

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Patented Jan. 11, 1938 UNITED STATES Pafriairr OFFICE SAW Robert M. Dunham, Houston, Tex., assignor to Brown & Root, 1110., Houston, Tex., a corporation of Texas Application November "16,1936, Serial No: i10,982 2 Claims. (01.14343) This invention relates to a saw and has particu-. lar relation to that type of saw specially designed for felling trees.

It is an object of the invention to provide a saw, of the character described which islmounted in a novel manner on a motor vehicle and, the invention includes means whereby the saw may be,

driven from the vehicle motor.

It is another object of the invention toprovide a saw support and driving means so mounted on the frame of the motor vehicle that the saw may be readily elevated or swung horizontally to the end that it may be readily applied to the work,

will be of sturdy construction and yet will possess the required flexibility to accomplish :the purposes intended.

Another object of the invention is to provide, in,

adevice of the -character described, a saw supporting and driving means which embodies two gear casings rigidly connected together and one of which is mounted on the vehicle frame to pivot on a horizontal axis and to the other of which the main driving shaft and its housing are connected so as to swing on an approximately vertical axis, the construction thus provided being very pensively produced and readily kept in repair.

With the above and other objects in view'the invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings, wherein:

Figure 1 shows a side view of the saw and its supporting and driving mechanism shown mounted on the front end of the motor vehicle. Figure 2 shows an enlarged fragmentary plan view, partly in section.

Figure 3 shows a vertical sectional view of a gear casing employed, showing the gearing" mounted therein,

Figure 4 shows a sectional view of said casing taken on the line 4-4 of Figure 2 and Figure 5- shows an end view of a cable winding drum em- 1 ployed.

Referring now more particularly to the drawings, wherein like numerals of reference desig-- hate similar parts in each of the figures, the numeral l designates a motor vehicle asa whole having a frame formed with side members 2.

At the forward end of the frame and secured thereto there is a cross bar 3, extending forwardly from which are the channels 4, 4, which are spaced the required distance apart and secured to the inner sides of which are the bosses 5,],5.

. rear end of the main driving shaft 24.

' the upper and lower cover plates 30 and 3|.

There lsa substantially circular gear casing 6 .having the end covers I, l enclosing said casing -and whose outer ends are extended and tubular and'forme'd with the bearings 8, 8, to receive saidboss'es. ,The casing covers I terminate in the annular flanges 9, 9 which bear against the inner sides of the channels 4. c

- A horizontal shaft l extends through the cas ing thus formed and the bosses and the channels 4 are provided with suitable bearings to receive said shaft. The shaft is also equipped with suitable antifriction bearings II, II.

Fixed on the shaft l0 and enclosed by said casing there is a bevel'driving gear I2 which is in mesh with a driven pinion I3 also enclosed by said casing.

The shaft '0 is confined against lengthwise 'm'ovenients-by means of the collars I 4, M which are fastened to the shaft on opposite sides of the channels 4. The shaft I0 is extended laterally and has a belt pulley l 5 fixed thereon over which the'mlt l6 operates. This belt is driven from av suitable-power'take off which is operatively connected with and driven from the motor of the vehicle. strong and durable and one which can be inex- The extendedend of the shaft I0 islsupported by and is rotatably mounted in suitable bearings 17,18 which are carried by-the main frame of the vehicle,

The pinion I3 is fixed, on the rear end of a stubshaft l9 which extends forwardly from the casing 6. Fixed on the forward end of the shaft 3 l9 there is a pinion 20 which is in mesh with and drives the bevel gear wheel 2|. This bevel gear wheel is fixed on a vertical shaft 22and is in mesh with and drives a pinion '23 which is fixed on the The transmission including the gears 20, 2| and 23, is inclosed in a transmission casing 25 which includes the upper and lower covers 26, 21. The upper and lower ends of the shaft 22 are mounted on -anti-friction bearings 28, 29 which are located in said' covers. These covers are extended and the outer ends are formed tubular and closed by The rear-end of the transmission casing 25, is formed with a tubular extended sleeve 32, which terminates in an external annular flange 33 and fastened to-theforwar-d endof the casing B is the sleeve34 which may be detached from the casing and whose forward end terminates in an external annularfflange 35'. Between the flanges 33, 35

there is an annular partiticn plate 36 which has a central bearing for the shaft IS. The flanges 733, 35 are, secured togetheriby the bolts 37 which lower flanges of the rings 40, 4|.

by means of the rings 40, 4|, formed of angle irons which are fitted therearound' as more accurately shown in Figure 3 and whose flanges rest against the outer margins of the covers 26, 21 and overlap the periphery of the casing 25. Said rings 40, 4|, covers 26, 21 and the casing 25 are secured in assembled relation by means of the bolts 42. Upper and lower annular plates 43, 44,

are fitted over the tubular ends of the covers 26;

21 and are secured together by means of the long clamp bolts 45 and rest against the upper and This provides a very sturdy construction for the transmission casing. A

The forward endof the transmission casing is cut away, providing an opening 46.

There is a tubular bearing sleeve 41 which is extended through said opening and whose inner end has the oppositely arranged anchors 48, 48 to which the opposing arcuate guides 49, 49 are attached. These guides work grooves 53, 5B of the casing 25.

The forward end of the bearing sleeve is formed with an external annular flange 5| and within said sleeve there is an antifriction bearing assembly 24a for the shaft 24. A- tubular shaft housing 52 surrounds the shaft 24 and its rear end is formed with an external annular flange 53. Between the flanges 5|, 53, there is an annular partition plate 54 having a central bearing for the shaft 24. This plate 54 abuts the outer end of the bearing assembly 24a and said plate plained, the transmission casing 25, together with the shaft 24 and its housing 52 may swing in a vertical plane about the axis of the shaft ill].

The shaft 24 and its housing are extended forwardly the required distance and fastened on the forward end of the shaft 24 there is a pinion 56- which is in mesh with and drives a bevel gear wheel 51. This gear wheel 51 is fastened on the sawshaft 58 and the gears 56, 51, are inclosed in a suitable housing designated generally by the numeral 59 and which is securely attached to the forward end of the housing 52 as more accurately shown in Figure 1. A circular saw 60 is suitably secured to the lower end of the shaft 58. The sawmay be swung laterally to be applied to the work by means of a suitable handle 6| which is attached to the housing 59.

Mounted on the framework of the vehicle I there is an A-frame 52 whose upper end carries a tackle block 63. The housing 59 is provided with a link 64 to which a clevis'65 is connected and a lower tackle block 56 is attached to the clevis 65 by means of cable 61. A flexible line 68 has one end connected to the eye 63, carried by the end plate 30 and this line is threaded through the sheaves of the tackle block 63, 66 and its other end is wound around the'drum 10 suitably located on the vehicle frame and operable by a in the insideworm gearing 1| which may be turned by a crank 12 to wind up or release the cable 68. v

The saw 60 may thus be elevated or lowered in an obvious manner and may be swung laterally as desired by means of the handle 6|.

The saw hereinabove described has been particularly designed for cutting small timber in the process of clearing land but may be used also for cutting trees of relatively large dimensions by increasing the diameter of the saw 60. The saw has been arranged forwardly of the transporting vehicle so that the timber may be readily reached and a passageway cleared for the forward movement of the vehicle as the work progresses.

It is obvious that certain mechanical changes may be made. without departing from the principle of the invention. The drawings and description, therefore, are intended to-disclose What is now considered to be a preferred form of the invention by way of illustration only while the broad principle of the invention will be defined by'the appended claims.

What I claim is:

1. A sawing machine comprising a motor vehicle having a frame, spaced anchors extending forwardly from the frame, gear casings, rigidly connected together, said anchors and one of the casings being provided, one with bosses and the other with bearings to receive said bosses whereby said casings are mounted on the frame to pivot about a horizontal axis, gearing in said casings, a power take off from the motor vehicle operatively connected with said gearing to drive the same, a driven shaft mounted to swing in an approximately common plane with said axis, a shaft housing about said shaft and swingable therewith, a bearing sleeve to which the shaft housing is connected, guides on said sleeve and working in the other casing and forming a connection between the sleeve and casing, a gear housing on the outer end of the shaft housing, a saw shaft mounted to rotate in the bearings in the gear housing, gearing in the. gear housing operatively connecting said shafts whereby the latter is driven from the former and a circular saw on the saw shaft mounted to rotate in a plane approximately parallel withthe driven shaft.

2. A sawing machine comprising a motor vehicle having a frame, spaced anchors extending forwardly from the frame, gear casings rigidly connected togethei,,said anchors and one of the casings being provided with means whereby said casings are mounted on the frame to pivot about a horizontal axis, gearing in said casings, a power takeoff from the motor vehicle operatively connected with said gearing to drive the same, a driven shaft mounted to swing in an approximately common plane with said axis, a shaft housing about 'said shaft and swingable therewith, a bearingsleeve to which said shaft housing is connected, guides on said sleeve in working relation with the other casing and forming a .connection between the sleeve and its casing, a gear housing on the outer end of the shaft housing, a saw shaft mounted to rotate in hearings in the gear housing, gearing in the gear housing operatively connecting said shafts whereby the latter is driven from the former and a saw on the saw shaft mounted to rotate 'in a plane approximately parallel to the driven shaft.

ROBERT M. DUNHAM.

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