US1660821A

US1660821A - Therapeutic percussor

Info

Publication number: US1660821A
Application number: US730083A
Authority: US
Inventors: William H Sweetland
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-08-04
Filing date: 1924-08-04
Publication date: 1928-02-28
Anticipated expiration: 1945-02-28

Description

Feb. 28, 192s., 1,660,821 I w. H. SWE'ETLAND THERAPEUTIC PERCUSSOR Filed Aug. 4, 1924 L? WML/,4M hf SWE/572 AND ,r @5% aun/kvm# Patented Feb. 28, 1928.

UNITED stares temen vrm"@Enr1- aries;

WILLIAM I-I. SWEETLLAND, OF SAN DIEGO, CALIFORNIA.

THERAPEUTIC IIEliJJEtCl'SSOR.

. Application filed August 4, 1924. Serial Non.` 730,083.

My invention relates to a therapeutic percussor for preparing patients prior `to making chiropractic adj ust-ments, and in general for stimulating the flow of blood and for stimulating the action and vdevelopment of muscle and tissue, and the objects of my invention are: first, to'provide a compact and eiiicient machine of this class which is particularly adaptable for the follow-up.

therapeutic work in connection with frac-- tures, vbruises and the like for stimulating .blood circulation and the action and devel? opment of muscle and tissue; second, to provide a machine of this class which is substantially noiseless in its operation; third, to provide a machine of this class which has relatively few moving and wearing parts and in which the wearing parts may be easily removed when worn and replaced by A others; fourth, to provide va novelly. constructed connecting rod and plunger means whereby the positive blow is directed directly seventh, to provide a n-ovel means for secur- .ing the supporting handle to the casing;

eighth, to provide a machine of thisy class of such weight that the same may rest with its whole weight on the body or members of theA patient to obtain the desired results,l andV which ris merely guidedv over the body or members of the patient by the operator; ninth, to provide as a whole a novelly constructed therapeutic percussor, and tenth, to

provide a machine of this class which is particularly simple and economical of construction, durable, and which will not readily deteriorate or get out of order. v

With these and other objects in view, as

will appearhereinafter, my invention consists of certain novelfeatures of construction, combination and arrangement of parts and portions, as .will vbe hereinaftery described in detail and particularly set forth in the appended claims, reference being had to the Aaccompanying drawings and to the characters of reference thereon, which form a part of this application, in which: Y`

Figure 1 is a sectional elevational'view of my therapeutic percussor, with the section takenthrough 1-1 of Fig.'2, certain parts and portions being shown in elevation to facilitate the illustration; Fig. 2 is a front elevational View thereof, with the cover of the casing partly broken away; Fig." :is a fragmentary sectional elevational View thereof, withrthe section takenthrough 3-3 of Fig. 1, 'and Fig. 4 is another sectional view thereof' in plan, witlithe section taken at y 4 4 of Fig. 1`.

Like characters of reference refer to similar parts and portions throughout. the several views of the drawings. i i

The casing 1, cover 2, screws 3, mot-or 4 `motor shaft 5dr1ve pinion screw 7, gear 8, gear supporting stud 9,' gear positionin@r member 10, stud 11, roller 12, connecting ro bearing membery 13, V'connecting rod 14, plunger 15, pin 16, bushing 17, stuffing bon cap 1S, body contact member 19,'e-lectric cablel 20handle member 21, screws 22, and f the greasey plugs 23,` constitute the principal parts and portions of my rtherapeutic percussor. f

` rThe casing 1 of mymachine is provided at its front side with a hollow portion la` in which is positioned the operating mechanism ofthe machine.` At thefront side of the casing and over the hollowportion thereof is secured a cover 2 `by means of screws 3, which cover is adapted to retain the operating mechanism in position.y rlhe casing is provided at the lower portion of its back side with a hackwardly extending', cylin! e a u b n drical portion l1, which serves as. a partial outer portionof which the housing of the motor 4i is secured, `preferably by means'of bolts 4a extending through the front of the casing. The-shaft 5 of the motor is revolubly mounted in andeXtends tl'irough a bushing 1c mounted in tliewall of and in the lower portion of the casing 1. At 'the end housing forthe motor 4, and against the of the shaft'oexte'nding into the hollow portion laof the casingis secured a drive pinion 6 by means of a shaft-expanding screw 7.

Meshing'withthe'pinion 6 is a large drive gear 8, which is secured at the one end of a stud 9, preferably bybeing driven thereon, which stud is revolubly mounted at its vopposite enlarged end iii a. bushing 1d mounted in the wall ofthe casing 1. The gear 8 is preferably heldin engagementv with a boss i. within the hollow portion of the casing by means of a gear positioning member 10, preferably made ofliiber, which 1s secured at the end of a lug 2av secured to and extending inwardly from the cover2, as shown best .in Fig. 1. At the side of the gear 8 opposite the stud 9 is driven another stud N11 at a spaced distance from the axisof rotation of the gear. Over the endof the stud 11 extending from the gear 8 `is positioned a liber roller 12, around which ispositioned ro i,

innerfyend of the plunger reciprocally mounted in a bushing 17 clamped between f the lower end of the casingA 1 and cover 2.

`It. will be here noted that the pivotal lcon- A nection between the connecting rod 14 and the plunger 15 is such that the force of the downward or outward stroke of theconnectingrod is directed against the ,whole en d of the plunger and not merely against the small pin 16 connecting the same. The strain on the pin 16 when the plunger lmoves inwardly is also negligible since ,the resiliency of the body upon which the machine is used and the resiliency of the body contact member 19 tends to force the plunger inwardly; therefore, the opposing forces at the joint, when `the plunger moves inwardly, are substantially compression forces instead of tension.

The connecting rod 1li and the plunger 15 are provided at their connected ends, respectively at their outer and inner sides, with circular recesses 14h yand 15a, concentric with the axis ofthe pin 16. AInto these circular recesses extend correspondingly rounded portions at the ends of the outer and'inner sides of the plunger-15 and the connecting rod 14, respectively, thus forming large bearing surfaces and a compact and eiiicient, as

rwell as durable, pivotal connection between said members.

The opening 1e at the lower portion of the Ycasing 1,-through which the bushing 17 extends,` isV preferably more than semicircular,` as shown Abest in

ligs.k

2 and 4 of the drawings', which structure prevents the bushing 17from falling out sidewise when the cover is removed, and therefore prevents the plunger,l the connecting rod and other members from Afalling out when the cover is removed;

The inner end of the bushing 17 is acutely beveled so as to catch any superfluous oil or grease and retain the samewithin the casing. The opposite end of the bushing 17 casing 1, as shown in Figs. 3

is provided with a stuffing box` cap 18 to further prevent oil or grease from leaving the casing around the plunger. At the outwardly extended end of the plunger 15 is secured a body contactineniber 19 of any suitable or Vdesired construction.

The motor of the machine is connected with a source of electrical energy by means ofan electrical cable 2O which extends upwardly through the cylindrical portion. 1b of the casing and outwardly through the hollow handle member 21, as shown best in Fig. 1. l y

The handle `member 21 is provided at its forward end with a downwardly extending enlarged portion 21a, at Hthe lower and' forward end of which are provided oppositely disposed lugs 2lb, which are adapted to extend into slots 1f at the back side of the and .tof the drawings. To secure the handle member 21 to the casing 1, there are providedY screws 22 which extend. from the inner side of the casing- 1 backwardly through the wall'thereof into the handle member. l Any suitable means may be employed for lubricating the bearings ofthe studs and the inotor's'haft, such as the grease plugs 23, shown in Fig. 1. i

It is obvious from this construction', as illustrated in the drawings and disclosed` in the specification, that there is provided a therapeutic percuvssor as aimed at *and set forthy inl the objects of the invention, 4,and though I have shown anddescribed a` particular construction, combination` and arrangement of parts and portions, I do not wish to be limited to this particular construction,

lUU

combination and arrangement, but Adesire to I include in the scope of my invention thev construction, combination and arrangementsubstantially as set forth in the appended claims.

Having thus described myinventi on, what Ifclaim as new and desire to secur'e'by Letters Patent, is: n n

1. In a machine of the class described, a casing, a cover for said casing, a; toothed drive pinion revolubly mounted within said casing, a toothed drive gearl revollibly mounted within vsaid casing andmeshing with said drive pinion andprovidednwith an outwardly extending bearing stud spaced from the axis ofrotation of said gear, a connecting` rod revolubly mountedandloosely positioned at its one end overy said bearing stud,'a kremovable stuffing box bushing Aposi-V tioned in' a more than semicircular opening in said casing and clamped therein byl` said cover, and a plunger Vrod reciprocally mounted in said bushing 'and,pivotally connected with the opposite end of said connecting rod.

A2. In a machine ,of the class described', a casing, s cover for said casing, a drive pinion revolublyV mounted within said 'f casing', a;`

drive gear revolubly mounted wit-hin saidy casing and meshing with said'drive pinion land provided with an outwardly extending mounted and loosely positioned at its oneV end over said bearing stud, a removable stufi'- ing box bushing positioned ina more than semioircular opening in said casing and clamped therein by said cover, and a plunger rod reciprocally mounted in said bushing and pivotally connected with the opposite end of said connecting rod in such a manner as to prevent the removal of the connecting rod from the bearing stud of the gear without removing said bushing. Y

3. In a machine of the class described, a casing, a cover foi-said casing, a drive pinion revolubly mounted within said casing, a drive gear revolubly mounted within said casing and meshing with said drive pinion and provided with an ,outwardly extending bearing stud spaced from the axis of rotation of said gear, a connecting rod revolubly mounted and loosely positioned at its one end over said bearing stud, a removable stuifing box bushing positioned in a more than semicircular opening in said casing` and clamped therein by said cover, and a plunger rod reciprocally mounted in said bushing and pivotally connected with the opposite end of said connecting rod in such a manner as to prevent the removal of the connecting rod from the bearing stud of the gear Without removing said bushing, the pivotal connection between said connecting rod and said plunger rod beingvsuch that the entire force of the downwardv stroke of the connecting rod is directed over the whole cross-sectional area of the inner end of the plunger rod.

4t. In a machine of the class described, a long easing having a removable cover at its front side and a handle at its upper portion, a motor secured to the lower portion of the back side thereof and having its shaft extended into said casing, a pinion positioned within said casing and secured to said shaft, a gear positionedin the upper portion ofv said casing in mesh with said pinion and provided with a backwardly extending bearingy stud whereby the saine is loosely and readily removably mounted in said casing, said gear having at its outer side an `outwardly extending bearing stud positioned eccentrically relative to the axis of the gear, said gear being retained in position by a bearing lug extending inwardly from said cover and positioned outside of the path of the eccentric bearing stud of said gear, a connecting rod provided with a large head loosely mounted over said eccentric stud, a bushing clamped between the casing' and. its

cover at theirnormally lower ends, a plungv er recipi'ocall'y mounted in said bushing, the i inner end of said plunger and the free end of said connecting rod being loosely pivotally connected together whereby fthe connecting rod may be lifted from the plunger when the bushing is removed, the connecting rod being held inV position by the engagement of the free end thereof by the inner end of said plunger.

In testimony whereof, I have hereunto set my hand atSa-n Diego, California, this 22d I day of July, 1924. p

f WILLIAM H. SVEE'ILAND,