US2299198A - Grooving machine - Google Patents

Description

Oct.20, 1942. R, lL Ms 2,299,198

GROOVING MACHINE Filed Aug. 7, 1940 2 Sheets-Sheet 1 99 '7 80 79 FiTE.

2/ INVENTOR Lou/.5 E. U/ILLl/IMS BY ATTORNEYS 1942- L. R. WILLIAMS GROOVING MACHINE Filed Aug. 7, 1940 2 Sheets-Sheet 2 ATTORNEYS Patented Oct. 20, 1942 GROOVING MACHINE Louis E. Williams, West Hollywood, Calif assign or of one-half to Richard T. Avard, San Gabriel,

Calif.

Application August '1, 1940, serial No. 351,741

(or. ear-180) 18 Claims.

This invention relates generally to the art of grooving surfaces of floors, Walls and roofs of brick, cementitious and other materials for utilitarian and ornamental purposes.

An object of this invention is to provide a machine particularly adapted, although not necessarily for use in the forming of a groove or grooves in vertical surfaces such as parapet walls, fire walls, curtain walls, building walls and other Walls above and adjoining floors and roofs, as Well as sloping roof surfaces confronting oppositely sloping roof surfaces, such grooves when for-med above a roof, being adapted to receive roof flashing and caulking materials to produce a watertight joint between the upper edges of the roofing materials under the flashing, and the adjoining wall or roof, as the case may be.

Another object of the invention is to provide a machine of the above described character which traverses a supporting surface such as a floor or roof while operating on a surface above the supporting surface by forming a groove therein which will be parallel to the line defining the junction of the two surfaces, as Well as by forming a continuation of the groove parallel to such junction around corners and across changes in grade of the supporting surface.

A further object of the invention is to provide a grooving machine structurally characterized by its relatively light weight; inherent stability insuring rigid mounting of the machine and ease of manipulation to effect accurate grooving of a surface; simple and positive means of feeding the cutting element to rapidly form a groove to a predetermined depth; its capability of being easily and quickly adjusted vertically to form a groove at any desired height above the supporting surface; and its tiltable adjustment to compensate for the angularity of a roof surface from the horizontal and/or the angularity from the vertical, of the surface in which the groove is to be formed.

With these and other objects in View, the invention resides in the combinations and arrangements of elements as set forth in the following specification and particularly pointed out in the appended claims.

In the accompanying drawings,

Figure l is a plan view of the grooving machine embodying this invention;

Figure 2 is a fragmentary View of the lower portion of the grooving machine in side elevation;

Figure 3 is a vertical sectional view taken on the line 33 of Figure l, with the motor of the machine in elevation;

Figure 4 is a horizontal sectional view taken on the line 44 of Figure 3;;

Figure 5 is an enlarged fragmentary'se'ctional view taken on the line 5-5 of Figure 4;

Figure 6 is a fragmentary sectional view taken on the line 6--6 of Figure2.

Referring specifically to the drawings, the invention, in its present embodiment, comprises a carriage C composed of a flat plate ID having ears i I in which are mounted vertical spindles 12 on yokes' l3 carrying two alined grooved wheels i5 adapted to travel on the head I6 of a. track H. The spindles 12 are secured to the ears II by nuts I8 and are suffi'ciently free in the ears to allow the wheels to rotate about the axes of the spindles to conform to curved portions of the track at corners of a vertical wall W in which a groove G is to be formed as the machine rolls on the front wheels l5 and on a single rear wheel 23 over' a horizontal or sloping supporting surface S such as a floor or roof.

The rear wheel rolls on a fiat track 2| and is mounted in a yoke 22 having a spindle 2'3 keyed at 24 in an opening in the plate Ill and provided with a nut 25 for clamping one or more shims 26 on the spindle between the underside of the plate l0 and the yoke 22 to enable the height of the carriage above the surface S at the wheel Zll to be varied. and thus have the effect of tilting the carriage, all for the'purpose of varying the direction of the cut with respect to the horizontal, to be later described.

The plate H] is provided between the three rollers l5 and 29 with a collar 33 internally threaded at 3| to receive a bearing element 32 in the form of an externally threaded annulus on which is mounted a' connector element 33 also in the form of an annulus having a radial flange 34 resting on the upper edge of the element 32, and an axial flange 35 entering the element 32. The external surface of the axial flange 35 is a portion of a cone frustum, and the opposed internal surface of the element, 32 is complementary thereto, as shown in Figure 3, so that the element 33 will be self-centering, and a snug rotary working fit in the element 32 insured.

The element 33 is provided with three posts equally spaced circumferentially within an angular distance of approximately (Figure 4) on which rests a second bearing element 4| in the form of an annulus having aring gear 42 secured thereto by bolts 43. the ring gear and the bearing element 41 into the posts 40' to secure such parts to the posts, so

- that for all practical purposes the connector ele- Other bolts 44 pass through ment 33, bearing element 4| and ring gear 42 become a single unit rotatably mounted in the bearing element 32.

Rotatively seating in an upward facing annular recess 45 of the bearing element 4| is the lower end of the shell 46 of a vertical type electric motor 41 which is confined against upward displacement from the bearing element 4| by a disk 48 secured to the lower hub 49 of the motor by screws 59 and having its peripheral portion rotatively seating in a downwardly facing annular recess 5| of the bearing element 4|.

The depending shaft 52 of the motor, which is co-axially related to the bearing element 4|, has fixed thereto a drive pulley 53 for a double belt 54 trained over a relatively small driven pulley 55 fixed to a vertical shaft 56 journaled in spaced bearings 51 on the outer section 58 of an extensible arm 59, the inner section 39 of which fits snugly between the bearing element 4| and the flange 34 of the connector element 33 and is rigidly secured thereto by screws 6|. The extensibility of the arm 59 is provided by bolts 62 in one section passing through longitudinal slots 63 in the other section, and enables the belts 54 to be properly tensioned and removed from the pulleys as desired. In order to prevent slipping of one section on the other, due to the pull exerted by the belts when in operation, an adjustable stop screw 64 is threaded through an ear 65 on the inner section 69 and abuts a lug 65 on the outer section 58.

Fixed to the lower end of the shaft 55 is a grooving element I9 in the form of an abrading wheel which is fed against the surface of the wall W by rotation of the ring gear 42 through the medium of a driving pinion gear 7| constantly meshing with the ring gear and fixed to a shaft I2 journaled in bearings I3 and I4 on the motor shell 46 and in a foot bearing I5, the shaft being supported by a collar I5 adjustable on the shaft and clamped thereto by a thumb screw TI so as to rest upon the bearing I4. The upper end of the shaft is provided with a handwheel I8 to enable the shaft to be conveniently rotated by an operator. A handle I9 is pivotally mounted in ears 89 projecting from the carriage C to enable the operator to shift the machine along the tracks I! and 2|.

A latching pin 95 (Figure 5) having a knob 86 is mounted vertically in a sleeve 81 in the flange 34 of the connector element 33 and is urged by a spring 88 to enter any one of a circular series of openings 89 in the bearing element 32 to latch the element 33 to the element 32 for a purpose to be later described. A diametric holding pin 99 in the pin is adapted to rest upon the upper end of the sleeve 81 or to enter an axial slot 9| in the latter according as the pin 90 is to be maintained in the nonlatching position shown in Figure 5 or released for movement to latching position when registered with one of the openings 89.

Subtending from opposite sides of the plate I9 are bosses in which is journaled a rock shaft 96 to the ends of which are fixed arms 91 and 98 carrying wheels 99, the axes of which are in right angular relationship to the axes of the wheels I5. The arm 91 is in the form of a bellcrank to provide a vertical lever I99 to which is pivoted one end of a link I9I, the other end of which is pivoted to an actuating lever I92 fixed to a second rock shaft I93 journaled in bearings in the plate I9 and spanning a slot I94 in the latter.

Mounted for rising and lowering movement in vertically slotted extensions I95 below the plate I9 is an axle I96 carrying a wheel I91 and actuated by an arm I98 on the shaft I93, through the medium of links I99. The axis of the wheel I91 is parallel to that of the wheels 99, and, in the raised position of these wheels shown in Figure 2, the point of connection of the link IN to the actuating lever I92 is above the axis of the rock shaft I93, and is maintained in this position by the weight of the lever. However, by moving the lever I92 in the direction of the arrow in Figure 2 until the lever abuts a stop H9 on the carriage, the link I9! will be moved beyond a dead center position so as to maintain the wheels 99 and I9! in a lowered position wherein the Wheels I5 and 29 are raised from the tracks I! and 2| sufficiently for the machine to be rolled away from the wall W on the wheels 99 and I91.

The operation of the invention is as follows: With the machine mounted for movement as shown in the drawings, and the motor 41 supplied with current to drive the grooving disk I9 at high speed in the direction of the arrow in Figure 1, the handwheel 18 is rotated to rotate the ring gear 42 and hence the bearing element 4|, connector element 33, and arm 59 as a unit about the axis of the motor and in a direction to advance the disk I9 against the wall W so as to effect grooving of the latter as the machine is rolled forward on the tracks by the handle I9. This revolving movement of the disk I9 is accomplished due to the fact that the motor 41 is prevented from rotating by the connection of the shaft 12 to the foot bearing I5, such movement of the disk being limited by the disposition of the shaft I2 in the path of the arm, and being sufiicient to cut a groove of any depth required in practice.

Any slight adjustment of the grooving element I9 vertically can be readily accomplished by releasing the latching pin 85 for operation in connecting the connecting element 33 and the bearing element 32 to rotate as a unit. Thus, with the arm 59 swung through a large angle in a counterclockwise direction in Figure 4, followed by engagement of the pin 88 in one of the openings B9, rotation of the arm 59 will cause the threads of the bearing member 32 to co-act with those of the collar 39 in vertically adjusting the grooving disk in one direction. Opposite rotational movement of the arm 59 will vertically adjust the grooving disk in the opposite direction. Any major vertical adjustment of the grooving disk is effected by raising the shaft I2 clear of the foot bearing "I5 and maintaining the shaft raised by the collar I6 followed by the desired rotation of the arm 59 in one direction or the other with the machine backed away from the wall W.

By removing or adding shims 29 to the spindle 23,'the machine can be readily tilted to cause grooving of the wall at an upward or downward angle to the horizontal, as desired.

It is to be understood that in the interpretation of the claims, the terms vertical and horizontal as used therein are to be broadly construed, as they are intended to refer only to the relative positions of the elements when the machines are operating on a true horizontal and are adjusted to cut a true horizontal groove in a Vertical wall. It will be obvious that these positions will vary to a greater or less extent, depending on the slope of the roof or wall in aaeaies cutting a groove parallel to the junction of the roof and wall. Furthermore, the term vertical wall shall be considered inclusive of steeply sloping surfaces, in which grooves may be desired for the insertion of roof flashing and caulking materials.

What is claimed is:

1. A machine of the class described comprising: a carriage; a grooving element; means mounting said element from the carriage for rotation about a vertical axis and for pivotal adjustment about a second vertical axis on the carriage; means on the carriage and said mounting means co-acting to adjust said element to effect grooving of a vertical surface by the element when rotated as the carriage is advanced along the length of the surface; means supported by the carriage and operatively connected to the grooving element to drive the latter; and means coactable with the carriage and said mounting means by which pivotal adjustment of the grooving element will effect vertical adjustment thereof to vary the height of the groove above a supporting surface on which the carriage travels.

2. A machine of the class described comprising: a carriage; a bearing element; means mounting said element on the carriage for vertical adjustment in response to rotational movement of the element; a grooving element; means mounting the grooving element on the bearing element for revolving adjustment about the axis of the latter and for rotation about a vertical axis; a prime mover supported by said mounting means and having a drive shaft co-axially related to the bearing element; means operatively connecting the drive shaft with the grooving element to rotate the latter; and means by which the bearing element can be connected to said mounting means for rotation therewith in response to revolving adjustment of the grooving element so as to effect vertical adjustment of the grooving element relative to the carriage.

3. A machine of the class described comprising: a carriage; a bearing element; means mounting said element on the carriage for vertical adjustment in response to rotation movement of the element; a grooving element; means mounting the grooving element on the bearing element for revolving adjustment about the axis of the latter and for rotation about a vertical axis; a prime mover supported by said mounting means and having a drive shaft co-axially related to the bearing element; means operatively connecting the drive shaft with the grooving element to rotate the latter; and a latching pin carried by said mounting means; the bearing element having openings adapted to be entered by the latching pin to connect the bearing element to the mounting means for rotation therewith in response to revolving adjustment of the grooving element so as to effect vertical adjustment of the'grooving element relative to the carriage,

4. A machine of the class described comprising: a carriage; a bearing element; means mounting said element on the carriage for vertical adjustment in response to rotational movement of the element; a grooving element; means mounting the grooving element on the bearing element for revolving adjustment about the axis of the latter and for rotation about a vertical axis; a gear fixed to said mounting means coaxially of the bearing element; means mounted on the carriage and co-actable with said gear to mover supported by said mounting means and operating connected to the grooving element to drive the latter; and means by which the bearing element can be connected to said mounting means for rotation therewith in response to revolving adjustment of the grooving element so as to effect vertical adjustment of the grooving element relative to the carriage.

5. A machine of the class described comprising: a carriage; a bearing element; means mounting said element on the carriage for vertical adjustment in response to rotation movement of the element; a grooving element; means mounting the grooving element on the bearing element for revolving adjustment about the axis of the latter and for rotation about a vertical axis; a prime mover supported by said mounting means and having a drive shaft co-axially related to the bearing element; means operatively connecting the drive shaft with the grooving element to rotate the latter; means by which the bearing element can be connected to said mounting means for iotation therewith in response to revolving adjustment of the grooving element so as to effect vertical adjustment of the grooving element relative to the carriage; a gear fixed to said mounting means co-axially of the bearing element; an actuating shaft journaled vertically on the carriage and prime mover; and means on said shaft co-actable with the gear to rotate the latter while the prime mover remains stationary, so as to effect rotation of the mounting means and hence revolving adjustment of the grooving element.

6. A machine of the class described comprising: a carriage; a bearing element; means mounting said element on the carriage for vertical adjustment in response to rotational movement of the element; a grooving element; means mounting the grooving element on the bearing element for revolving adjustment about the axis of the latter and for rotation about a vertical axis; a prime mover supported by said mounting means and having a drive shaft co-axially related to the bearing element; means operatively connecting the drive shaft with the grooving element to rotate the latter; means by which the bearing element can be connected to said mounting means for rotation therewith in response to revolving adjustment of the grooving element so as to effect vertical adjustment of the grooving element relative to the carriage; a gear fixed to said mounting means co-axially of the bearing element; an actuating shaft journaled vertically on the carriage and prime mover; means on said shaft co-actable with the gear to rotate the latter while the prime mover remains stationary, so as to effect rotation of the mounting means and hence revolving adjustment of the grooving element; said actuating shaft being axially shiftable upwardly from the carriage sufficiently to disengage the latter so as to enable said mounting means to be rotating with the bearing element through more than a revolution.

'7. A machine of the class described comprising: a carriage; a bearing element threadedly mounted on the carriage for vertical adjustment when rotated; a connector element mounted on the 7 bearing element for rotation about a vertical effect said revolving adjustment of the grooving w element by rotating the mounting means; a prime axis and having a plurality of circumferentially spaced posts; a second bearing element fixed on said posts; an arm fixed to said elements to project radially therefrom; a grooving wheel rotatably mounted on the arm; an electric motor having a vertical drive shaft and mounted on the bearing element; and means operatively connecting the drive shaft to the grooving element to drive the latter.

17. A machine of the class described comprising: a carriage; a bearing element mounted on the carriage for movement about a vertical axis; a grooving element; means mounting the grooving element from the bearing element for rotation and for revolving movement about the axis of the bearing element; a prime mover supported from the bearing element and having a drive shaft co-axially related to the bearing element; means by which the prime mover can be confined against rotation or freed for rotation; means for driving the grooving element from said shaft; and means whereby adjustment of the bearing element about its axis will effect vertical adjustment of the bearing element.

18. In a machine for grooving a vertical wall, a carriage; a prime mover having a drive shaft; means mounting the prime mover on the carriage for rotation about the shaft axis with the latter vertically disposed; a grooving element; means rigidly secured to the prime mover, mounting the grooving element for rotation and for revoluble movement with the prime mover as a unit about the axis of said shaft; means 0peratively connecting the drive shaft to the grooving element to drive the latter; and means by which rotational movement of the prim mover can be effected to cause bodily movement of the grooving element into and. out of engagement with the wall.

LOUIS R. WILLIAMS.

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