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Publication numberUS3147972 A
Publication typeGrant
Publication dateSep 8, 1964
Filing dateFeb 19, 1962
Priority dateFeb 19, 1962
Publication numberUS 3147972 A, US 3147972A, US-A-3147972, US3147972 A, US3147972A
InventorsJoseph Borsuk
Original AssigneePhilmont Pressed Steel Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Merry-go-round
US 3147972 A
Abstract  available in
Images(2)
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Sept. 8, 1964 J. BORSUK 2 MERRY-GO-ROUND Filed Feb. 19, 1962 2 Sheets-Sheet 1 INVENT R Jame/ 50/151 ATTORNEYS J. BORSUK MERRY-GO-ROUND Sept. 8, 1964 Filed Feb. 19, 1962 2 Sheets-Sheet 2 I N V ENTOR fare 5022f? ATI'QRN EYS United States Patent 3,147,972 MERRY-GO-ROUND Joseph Borsnk, Philadelphia, Pa., assignor to Philmont Pressed Steel, Inc., Huntingdon Valley, Pa., a corporation of Pennsylvania Filed Feb. 19, 1962, Ser. No. 174,199 2 Claims. (Cl. 27239) The present invention relates to a merry-go-round of the type which can be used in or about the home for the entertainment of a small child.

A purpose of the invention is to provide a very simple and inexpensive merry-go-round construction which will have maximum safety.

A further purpose is to mount a drive housing at the top of upwardly converging legs, to drive the merry-goround by a vertical shaft from the drive housing and to provide a frictionally engaged or otherwise free collar on the shaft.

A further purpose is to hinge the legs to the outside of the drive housing.

A further purpose is to mount the drive shaft on a bearing which is located approximately at the apex of the converging legs and to pivot the arm on the shaft immediately above the apex.

Further purposes appear in the specification and in the claims.

In the drawings I have chosen to illustrate one only of the numerous embodiments in which the invention may appear, selecting the forms from the standpoints of satisfactory operation, clear illustration and effective demonstration of the principles involved.

FIGURE 1 is a top plan view of the device of the invention with the legs broken away.

FIGURE 2 is a side elevation of the device of FIGURE 1 with one of the legs broken away.

FIGURE 3 is a central vertical section to enlarged scale showing the drive housing and associated parts.

FIGURE 4 is a plan section of FIGURE 3 on the line 4-4.

FIGURE 5 is a fragmentary enlarged vertical section through one of the leg pivots.

Describing in illustration but not in limitation and referring to the drawings:

In the prior art, merry-go-rounds for children have been in most cases relatively complicated and expensive.

There has been also the possibility in some prior art merry-go-rounds that injury might occur to a child on the merry-go-round or to someone standing nearby.

The present invention is concerned with the construction of a very inexpensive merry-go-round for use by a small child which will be of increased safety.

In the device of the invention, a drive housing 20 consists of a bottom housing portion 21 which is flanged at the top at 22, and which has a central bottom opening 23 provided with a bushing 24 for introduction of electric wiring 25.

The drive housing has a top portion 26 suitably of dome form which has a bottom flange 27 which is suitably bent over at the outside at 28. The two flanges 27 and 22 have between them a diaphragm or membrane 3% which is provided with an opening 31 and has secured thereto as by spot welding a gear housing 32.

The three elements consisting of the bottom section 21, the top section 26 and the diaphragm or membrane 30 are united together as shown by bolts 33.

Secured to the bottom housing at suitably four equally circumferentially spaced points are hinge housings 34 which may conveniently be spot Welded to the bottom portion of the drive housing 21. The hinge housing 34 comprises a wall 35 united to the outside of the drive housing 21, sides 36, and sloping limiting outer portion 37 which in outer position serves to engage and limit the leg while permitting it to fold as shown by the broken lines in FIGURE 5.

Each leg is suitably a tube 38 hinged on a pin 40 and having a rubber foot 41.

Inside the drive housing 2d, the gear housing 32 supports a speed reducer 42 by rivets 43 and the speed reducer supports an electric motor 44 by studs 45 secured to the speed reducer.

The motor has an output shaft 46 which connects through the gear reducer 42 with the input shaft 47 which extends through an opening 48 in the gear housing and carries a pinion 50 which meshes with a gear 51 at the lower end of the drive shaft 52.

The drive shaft 52 is journalled on an anti-friction bearing, suitably a journal and thrust ballbearing 53 secured to the top of the drive housing 2%). The drive shaft has above the bearing a pin 54.

It will be evident from FIGURE 2 that the apex of the converging pyramid-like legs is approximately at or just below the bearing 53 and this provides great stability against tipping over of the drive housing 20.

The drive shaft 52 extends directly above the drive housing 20 and receives a tubular collar 55 which rests on the upper end of the drive shaft 52 against the pin 54.

The collar 55 fits loosely around the drive shaft 52 and if any obstruction is encountered, slips with respect to the drive shaft 52 since the only driving impulse is the friction between the drive shaft 52 and the collar 55.

The collar 55 has secured thereto as by welding an arm 56 which is suitably bent to form the frame structure of a childs seat 57 of any well-known type, having a canvas or other suitable back 58 which is provided with a seat portion 69, and back portion 61 and leg engaging portions 62 at the front. The seat may be of a conventional character used in automobile seats and hammocks for children from a few months to three or four years old.

The arm 56 is reinforced in its connection to the collar by a brace 63 which has an upper web portion 64 and a rearward gripping portion 65 which engages the back of the collar.

In operation, the merry-go-round is placed in position with the legs extended as shown in FIGURES l and 2.

The child is then placed in the seat and the motor is started by making the electrical connection. The seat turns slowly. If the child encounters any obstruction such as furniture the seat remains and the collar 55 slips around the upper end of the shaft 52.

The amount of frictional grip depends to some extent on the downward movement due to the weight of the child and therefore the heavier the child the greater the frictional engagement of the collar 55 with the drive shaft.

Furthermore, since the legs converge toward an apex located just about the bearing 53 and immediately below the collar 55, the structure is very stable against tipping over. In any case, the center of gravity of the child is within the area bounded by the legs or toward the center with respect to the leg as seen in FIGURE 2.

When the device is not to be used, the seat and arm can be lifted off the top of the drive shaft and the legs can be folded and the entire device Will then fit into a closet.

In view of my invention and disclosure variations and modifications to meet individual whim or particular need will doubtless become evident to others skilled in the art, to obtain all or part of the benefits of my invention without copying the structure shown, and I therefore claim all such insofar as they fall within the reasonable spirit and scope of my claims.

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

1. In a merry-go-round, a plurality of upwardly extendenemy/2 (3 ing converging legs, a drive housing interposed between the upper ends of the legs, hinge supports for the legs secured to the drive housing at positions distributed around the outside of the drive housing, a motor drive in the 4. 1y thereof, and a seat mounted on the outer end of the arm.

2. A merry-go-round of claim 1, in which the legs converge toward an apex, the apex being located approximatedrive housing having a vertical output shaft at the top of 5 ly at the location of said bearing.

the drive housing, a bearing for the shaft in the drive housing, a collar surrounding the shaft above the drive housing and freely turnable with respect thereto except for frictiona1 drag, an arm secured to the collar and extending radial- Wunderlich Mar. 15, 1955 Taylor Oct. 2, 1956

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2704111 *Jun 21, 1954Mar 15, 1955Wunderlich Lowell HBaby jumper
US2765168 *May 28, 1954Oct 2, 1956John R TaylorCarousel
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3558129 *Jan 31, 1969Jan 26, 1971Curry Charles LChildren{3 s merry-go-round
US7563170Mar 20, 2006Jul 21, 2009Graca Children's Products Inc.Child motion device
US7607734Nov 3, 2006Oct 27, 2009Graco Children's Products Inc.Child motion device
US7614930Nov 1, 2006Nov 10, 2009Graco Children's Products Inc.Inflatable child activity center
US7717798Nov 3, 2006May 18, 2010Graco Children's Products Inc.Child motion device
US7722118Mar 1, 2007May 25, 2010Mattel, Inc.Repositionable child support device
US7770971 *Mar 26, 2008Aug 10, 2010Graco Children's Products Inc.Seat support structure for a child motion device
US7789762Nov 3, 2006Sep 7, 2010Graco Children's Products Inc.Child motion device
US7824273Nov 3, 2006Nov 2, 2010Graco Children's Products Inc.Child motion device
US7874927Oct 31, 2007Jan 25, 2011Graco Children's Products Inc.Capacitive sensing in user interface and motion control for a child motion device
US7883426Mar 5, 2009Feb 8, 2011Graco Children's Products Inc.Child motion device
US7884710Oct 31, 2007Feb 8, 2011Graco Children's Product Inc.Audio modulation for a child motion device
US7918742Oct 31, 2007Apr 5, 2011Graco Children's Products Inc.Motor drive feedback control for a child motion device
US8029377Mar 19, 2008Oct 4, 2011Graco Children's Products Inc.Child motion device
US8057362 *Jan 21, 2011Nov 15, 2011Yasser NadimExercise device and method of using same
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Classifications
U.S. Classification472/29, D21/830
International ClassificationA63G1/00
Cooperative ClassificationA63G1/08
European ClassificationA63G1/08