US1760578A

US1760578A - Vibrating machine

Info

Publication number: US1760578A
Application number: US291375A
Authority: US
Inventors: August E R Blomquist
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-07-09
Filing date: 1928-07-09
Publication date: 1930-05-27
Anticipated expiration: 1947-05-27

Description

M y 27, 1930. A. E. R. BLOMQUIST 1,160 518 V I BRATING MACHINE Filed July 9, 1928 C5 Sheets-Sheet l May 27, 1930.

A. E. R. BLOMQUIST VIBRATING MACHINE Filed Ju1y 9, 1928 3 Sheets-Sheet 2 OW,MMM

May 27, 1930. A. E. R. BLOMQUIS'i' VIBRATING MACHINE Filed July 9, 1928 5 Sheets-Sheet 3 ll l Patented May 27, 1930 AUGUST E. R. BLOMQUIST, on onnvnnnnn, onto vrnnn'rrn'e MACHINE i Application filed J'ulyfl, 1928. Serial No. 291,375.

This invention relates to improvements in vibrating machines of the class in which an applicator strap or belt, that is adapted for engagement about a part of the body to be treated, is connected to vibrating members or cranks that act to jerk the strap or belt alternately in opposite directions thereby to set up a vibratory action that is imparted to the part of the body wherewith the belt is engaged.

The primary purpose of the invention is to provide a machine of the above mentioned class wherein either or both the speed of the machine and the length of the stroke may be changed by simple and convenient manipulatio'ns. i

Further objects are to provide a substantial, durable and rigid machine of the class aforesaid that is very e'fiicient; that incorporates mechanism that is relatively simple of construction, positive of action, and convenient of adj ustmentfor changing the speed ofthe machine; and to provide means, possessing like qualities, for adjusting the stroke of the machine. i With the foregoing and additional objects in view that will becomeapparentas this deannexed hereto and illustrated, according to the present preferred embodiment of the invention, 1n the accompanying drawings. Inthe drawings, Fig. 11s a front elevatioinand Fig. 2 a fragmentary side elevation, ofmy improved vibrating machlne; Fig.3 1s

a plan View of the machine withthe appliicator belt orlstrap shown in broken lines;

ofthe preceding views and in which the mid Fig. l is a central verticalseotionthrough the machine onjthe llnes 4. i ofFigs-l, 3 and 5, and on. a scale somewhat enlarged over that dle portion of the machine is broken. away so asto shorten the view and permit rofwthe larger soaleyFig. 5 is a-horizontal section that is taken substantially: on the linejofifi of Fig. 4;; Fig. 6 is a detail of thewgearing appearing in Fig. 5 and showing the driver shifted to its position opposite that illustrated n the preceding figure; Fig. 7 is an end view of one of the crankdisks and its pin, on a further enlarged scale; Fig. 8 isya section on the correspondingly numbered line of Fig. 7; and Figs. 9and 10 are sectionson the line a-a of Fig. 8, the former being taken as though looking in the direction of the arrows 9, and the latter as in the direction of the arrows 10. i

The machine. is of the pedestal type and the frame structure thereof includes a base i 1, a column 2, and a gear casing 3. The base is hollow and, generally, of conical shape, and its under side is formed with sockets 5 within whichpads .6 of rubber or other suitable material are held by means of clamping.

An electric motor 10 disposed within the base 1 with its armature shaft 11 substantially coincident with the vertical axis of the base.

The motor may be supportedby elongated screws 12 whose upper ends are screwed into lugs 18 that are shown as formed integral with the base, the said screws 12 preferably being those which serve to hold the partsof the motor casing together.

Fitted to the top ofthe base l, and secured "thereto as by means of'cap sorews15, is the lowerend of the hollow column 2. ,The upper end of this column has a circular opening in which the cylindrical extension 16 of a gear easing 3 is secured. The body portion of the gear casing is, generally, in ithe shape of a'bowl and is surmounted by a cover 17 that is 'heldto the oasingby screwsl8. Adj acent its forward side,the casing 3 is formed with? laterally extending hollow bosses 20. Fixed within each ofsaid bosses QQis a cylindrical shell 21 having, intermediate itsv ends, an internal flange 22 that supports anflantifriction bearing 23.. Clamped between the T OFFICE outer side of the flange 22 of each of the shells 21 and a ring nut 24 that is screwed into the outer end of the shell is a retainer 25 for an oil ring 26 of suitable packing material. 5 Rotatably supported within the ring nuts 24 and retainers 25, by the bearings 23, are shafts 28 that carry crankdisks 29 at their outer ends, said shafts having grooves 30 that are occupied by the inner edges of the oil rings 26. Collars 31 are pinned or otherwise secured to the shafts 28 inwardly of the bearings 23 for retaining the shafts against outward movement. Mounted upon, and keyed or otherwise secured to, the reducedinner ends of the crank shafts 28 is a unit 35 incorrating axially spaced worm wheels 36 an 37 that are of difl erent diameters. V

The cylindrical extension 16 of the casing 3 has a. correspondingly shape'dibore :wherego in is journaled a hollow cylindrical block "mthut is provided with diametricallyop- (1 tapered sockets 41 for the reception of econical end 42 of alocking screw 43 that "is threaded adjacent its outer end and oper- 15 ates within a "tapped hole in the casing 3, the screw being equipped with a knurled head 44. J ournaled within anti-friction bearings 45 that are suitably fitted within the 11 per and lower ends of the block '0 ins aft 46 that is equipped with a worm 47 for cooperation with the previously men- "tioned '

wormwheels

36 and 37 of the unit 35. A packing device 48 seals the joint between. the lower 'end of the shaft 46 and the block "be retained in the casing.

- e shaft 46 is driven from the motor "shaft-l1, in the present instance, through the intervention o-f-a flexible shaft 50, the joined o sendsof the'base 1 and column 2 having aligned apertures 51 for the accommodation of the flexible shaft. An electric switch 52 ie'shown asmounte'd within the upper front Ition of the column 2, and wires are led herelfrom, through-an opening 53 in the column, downwardly'through the column and through the openings-51 to the motor, but

for thesake of clearance these wires are omitted from the drawings.

A spindleis journaled within a central hdllow boss of the'cover 17 and at its upper end is 'equi ped with an operating handle 61. Secur to the lower end of the spindle iis'anarm 62 (Figs. 4, 5 and 6) whose free 85 6113 is {provided with an aperture within I which is'journaled the upper end of the'shaft F146 thatcarries the worm 47.

From-theforegoing description it is evi- WL 'dentthatjwhenthe switch 52 is closed and "to 1 'fihemotorw energized as a consequencether'eofitherotation of the motor shaft will be f tted through' the flexible shaft 50 to ithe'shaft46, and thence, through the worm "4711M one or the other of the worm wheels or 371:0 the crank shafts 28. Assuming B 40 so that a quantity of suitable lubricant that the motor runs at a substantially constant speed, the speed of the cranks may be changed by first retracting the locking screw 43 so as to withdraw its inner end from the socket 41 of the block 40 that it then occupies, and then turning the spindle 60 by means of the operating handle 61 to swing the worm 47 out of engagement with one worm wheel and into mesh with the other. The doing of this rotates the block 40 through 180 degrees and presents the other recess 41 of said block in receiving relation to the locking screw 43, whereupon said screw may be turned by the knob 44 to project its inner end into said recess.

In addition to changing the speed of machines of the class in question, it is desirable to change the length of the stroke. This I .accomplish by making the crank pins shiftable toward and from the center of the crank disks 29.

Each crank pin 65 extends from a relatively fiat circular head 66 of a stud 67 that is journaled within a recess 68 of the corresponding crank disk 29, the peripheral portion of the head 66 having a plain inner face that engages a flat annular surface on the crank disk. The inner face of the head 66 has a plurality of depressions 70 that are spaced apart like distances circumferentially of the head, and a ball 71 that is contained, with a spring 72, within a recess in the crank disk, is urged outwardlyby said spring into any one of the depressions 70 that is brought into register with the ball. This an indexing means for enabling both crank pins 65 to'be similarly adjusted with respect to their crank disks; but the crank pins are adapted to be held in fixed relation to their disks by means which I shall now describe. The inner end of each of the studs 67 has a circumferential groove whose walls, especially their inner walls, are beveled, as-shown at75. Operating within a radial bore of each crank disk is a bolt 76 whose inner end is shaped for cooperation with the tapered wall of the stud 67, and said bolt is adapted to be forced inwardly by means of a screw 77 that is threaded into the enlarged tapped outer end of the bore that is occupied by said bolt. When the bolt is forced inwardly it cams the stud 67 axially of the recess 68 and draws its head 66 into such firm contact with the underlying portion of the crank disk 29 as to frictionally hold the crank 65 against displacement from the position wherein it is'yieldingly held by the ball 71.

Having thus descrbed my invention, what I claim is 1. In a vibrating machine, the combination of a vibrating element, mechanism for vibrating the same including axially spaced gears, a member rotatable on 2111213115 inter mediate the planes of said gears, power transmitting means supported by said member portion of said structurefor rotation on an ill) 2. In a vibrating machine, the combina tion of a supporting structure, vibrating mechanism sustained thereby and including axially spaced gears, a member supported by the structure for rotation on an axis inter.

mediate the planes of said gears, power transmitting means carried by said member and adapted to be swung through an arc concentric with the axis of rotation of said mem ber into driving engagement with either of said gears by the oscillationof said member, means supported by the structure for rotation substantially on the axis of said member andby means of which the member is adapted to be rotated through the intervention of the power transmitting means, driving mechanism, and operative connections between said mechanism and the power transmitting means.

3. In a vibrating machine, the combination of a pedestal-like supporting structure, driving mechanism within the base of said structure and having a drivingshaft whose axisis substantially coincident with that of the structure, a member supported by the upper portion of said structure for rotation on an axis substantially coincidentwith that of the structure, a driver and its shaft rotatably supported by said member with its axis substantially vertical and eccentric with respect to that of the member, vibrating mechanism sustained by the structure and involving gears spaced apart along a common axis that is loactecl to one side of and disb posed at substantially right angles to the axis of the casing, the driver being adapted to be shifted into engagement with either of said gears by the oscillation of said member, and flexible driving connections between the shaft of said driver and the shaft of the aforesaid driving mechanism.

4. In a'vibrating machine, the combination of a pedestal-like supporting structure, dr1v ing mechanism within the base of said structure and having a driving shaft whose axis is substantially coincident with that of the structure, a member supported by the upper axis substantially coincident with thatof the structure, a shaft rotatably supported by said member with its axissubstantially vertical and eccentric with respect to that of the member, a driver carried by said shaft,

vibrating mechanism sustainedby the structure and involving gears spaced apart along adapted to be ber,

the other a common axis that is located to one sidejof and disposed at substantially right angles totlle axis ofthe casing, said driver being shifted into engagement with either of said gears by the oscillation ofsaid member, means forretaining said member in the respective positions it occupies when the driver is in engagement with thesaid gears, and driving connections between the shaft of said driver and the shaft of the aforesaid drivingmechanism and which is of suchnature as to permit of the oscillation of the aforesaid member. 1

5; In a vibrating machine, the combination of a pedestal-like supporting structure, driving mechanism within the base of said structure and having a driving shaft whose axis is substantially coincident with that of the structure, a member supported by the upper portion of said structure for rotation on an axis substantially coincident with that of the structure, a driver and its shaft rotatably supported by said member with its axis substantially vertical and eccentric with respect to that of the member, vibrating mechanism sustained by the structure and involving gears spaced apart along a common axis that is located to one side of and is disposed at substantially right angles to the axis of the casing, the driver being adapted to be shifted into engagement with either of said gears by the oscillation of said memmeans for retaining said member in the respective positions it occupies when the driver is in engagement with the said gears, driving connections between the shaft of said driver and the shaft of the aforesaid driving mechanism and which is of such nature as to permit of the oscillation of the aforesaid member, a spindle journaled within the supporting structure for rotation on an axis substantially coincident with that of said member, and connections through which the memer is adapted to be rotated by'said spindle through the intervention of-the driver shaft.

6. In a vibrating machine, the combination of a supporting structure comprising a base, pedestal, and surmounting casing, cranks disposed on the opposite sides of said casing and having a common rotating axis, a member within the casingand connected to the cranks for driving the same, said member involving axially spaced gears, a member 'journaled within the supporting structure substantially on the vertical axis of the casing and between the planes of said gears, a shaft journaled within said member and having its axis eccentric with respect to that of the member, a driver on said shaft for said gears, said members be rotated in one direction to engage the cooperation with being adapted to" driver with one of the gears, and in the "opposite direction to engage the driver with gear, means for retaining the member in either of its extreme pos t ons, a

spindle journaled within the top of the easing with its axis substantially coincident with the axis of the aforesaid member, connections through which said member is adapted to be '0s0iilated through the intervention of the aforesaid shaft, an operating handle carried the spindle above the casing, driving mechanism within the base, and flexible drivhigoonneetions between said mechanism and iflmyoforesaid shaft, said connections being housed within the pedestal 0f the structure.

In testimony whereof, I hereunto affix my 7 signature.

AUGUST E. R. BLOMQUIST.