US2511990A - Folding baby carriage - Google Patents

Folding baby carriage Download PDF


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US2511990A US746537A US74653747A US2511990A US 2511990 A US2511990 A US 2511990A US 746537 A US746537 A US 746537A US 74653747 A US74653747 A US 74653747A US 2511990 A US2511990 A US 2511990A
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baby carriage
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Nemec Frantisek
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Nemec Frantisek
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    • B62B7/00Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • B62B7/08Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis


June 20, 1950 F. NEMEc FOLDING BABY CARRIAGE 3 Sheets-Sheet 1 Filed May 7, 1947 N VEN T08 F/PANT/jE/c NEMEC 3 m, 4/44! a k @044 H T TOEMEX June 20, 1950 F. NE/MEC 2,511,990
FOLDING BABY CARRIAGE Filed May 7, 1947 :s Sheets-Sheet 2 Y well-fox Fmuwsen Nanec BY 62m v H TTORNEYJ June 20, 1950 F. NEMEC U 2,511,990
FOLDING BABY CARRIAGE 7 Filed May 7, 1947 I 3 Sheets-Sheet 3 nun/rare TeAA/r/sE/r /YEVMEC @4224, 72041177771? Patented June 20, 1950 UNITED FOLDING BABY CARRIAGE Frantisek Nmec, Prague, Czechoslovakia Application May 7, 1947, Serial No. 746,537 In Czechoslovakia December 1, 1945 Section '1, Public Law 690, August s, 1946 Patent expires December 1, 1965 13 Claims.
This invention relates to a baby carriage com.- prising a four-wheeled undercarriage and a framework of bent tubing which supports a pliable body, suitably of textile fabric for accommodating the baby.
Many known baby carriages have the disadvantage of considerable bulk which renders their conveyanceby rail or road difficult and often prohibitive. The delivery from the manufacturer to the dealer is also frequently difficult and expensive since the carrying capacity of the railway or road vehicle is insufficiently utilized.
Folding baby carriages have already been suggested'and existing types differ considerably in form from the ordinary non-folding carriages since the possibility of folding is attained by ar bitrary and even then incompletely successful Variations in the construction. Many existing types form bulky and inconvenient packages when folded although frequently only two wheels are provided. In other types a separate bag is required to contain the dismantled part; evenv so one or two of the components are left surplus after the packing and have to be employed as a walking stick or sticks.
By contrast the present invention provides a foldin baby carriage of entirely normal form with four running wheels, suitably of equal size, which does not differ in outward appearance from any ordinary non-folding baby carriage. This retention of the customary external appearance is an important selling point and constitutes the principal feature of the invention which therefore involves quite novel means for obtaining a folding construction, consisting essentially in a novel design of the principal components, in particular of the undercarriage and of the framework;
The invention contemplates particularly the use of a tubular framework comprising two essentially identical U-shaped end members, two W-shaped central members and if desired two extension tubes; and. an under-carriage comprising essentially two tubular axles to the ends of which the running wheels are detachably fixed said axles carrying two detachable longitudinal bearers with springs supporting the W-shaped central members of the framework. This forms a simple structure which can be easily dismantled and folded by the provision of suitable quick-release connecting joints and which when folded forms a flat package more convenient as hand luggage than other existing types, of pleasing external appearance,. and
shape and size. A further advantage is the possibility of converting the baby carriage from a push-chair into a perambulator by the addition of a small number of supplementary parts.
In the push-chair form the seat for the occupant preferably consists of two layers of textile fabric constituting a bag into which the dismantled parts of the framework can be packed for carrying, thus. forming a fiat package with a carrying handle formed by one or more members of the framework. Since the total weight of the baby carriage is relatively low-about 7 lbs. for the push-chair arrangement or 17 .lbs. for the perambulatorit is easily carried;
The perambulator arrangement also folds flat and can be conveyed by rail or road without difficulty.
Suitable design of the component parts of the p ush-chair baby carriage enables its easy transformation into a. lounging chair. Thus the child I031]. be brought to a playground in the baby carriage and the person in charge may then convert the carriage into a chair, obviating the necessity for bringing a separate seat.
The wheels of the carriage are easily detachable and can be replaced by rockers or runners for converting the carriage into a cradle or a rocking chair or even into a sleigh or sled for winter use.
Dismantling and re-assembling of the baby carriage are easily performed by mechanicallyunskilled persons such as are usually entrusted with thecare of young children.
By way of example some embodiments of the invention are illustrated on the accompanying drawings.
Figure 1 is a. diagrammatic elevation of a pushchair baby carriage with the near wheels removed.
Figure 2 is a plan view of the baby carriage.
Figure 3 is a partial plan view thereof.
Figure 4 shows in longitudinal section a joint connection for two tubes meeting at an oblique angle.
Figure 5 shows in longitudinal section .a joint connection for two aligned tubes.
Figure 6 is a side elevation of the front seatsupport.
Figure 7 is a partial section of the foot-rest.
Figure 8 is a longitudinal section, Figure 9 a. plan, and Figure 10 a partly sectional side elevation (along X-X of Fig. 8) of a wheel and mudguard attachment.
Figure 11 shows a modified wheel attachment more nearly resembling an ordinary handbag in without mudguard,
Figure 12 shows conversion of the push-chair arrangement into a lounging chair.
Figure 13 is a plan, and Figure 1% an enlarged side view of a bow-shaped rocker, skid or sleigh runner, in section.
Figure 15 is an elevation and Figu e plan view of the push-chair baby 'carria folded.
Figure 17 is a side elevation of the perambulator arrangement.
Figures 18, 19 and 20 show details of ambulator arrangement.
The push-chair arrangement according to Figs. 1 and 2, comprises a four-wheeled undercarriage and a tubular body. The wheels i are fitted on axle tubes 2 carrying two longitudinal bearers 3 on which are springs 4 supporting two W-shaped side frames 5. At one end the side tile suitably modified for application to parts meeting at right angles.
For tubes meeting in line the connection can be made as shown in Fig. 5 where the end of one tube, in this case the extension tube 1, is provided with a shoulder and fitted with an internal leaf spring l9 having at its free end a stud 29 projecting into a hole in the second tube, in the particular case the handlebar 8. The tip of the stud 20 is bevelled in such manner that when the tube 8 is pushed over the end of the tube 1 the stud is pressed down and afterwards pressed out by the spring into the hole in the frames 5 are continued by a tubular "back-rest.
3 and at the other end by straight extension tubes 1 to which a U-shaped handlebar 8 is attached. The parts (i and 8 are essentially similar. The cross-piece of the back-rest 6 is passed through the endloop of a fabric strip 9 the other end of which is attached to a bow, is to the side frames -5 as shown in Fig. 6. The back-rest B carries a table flap H on a. supporting bar l2. The latter with the table flap can also be attached to the extension tubes 1 wh n it can serve as a luggage carrier. 7
A foot-rest i3 is movably fitted between the ends of the longitudinal bearers 3. In the position shown by full lines in Fig. 1 the short arm of the foot-rest l3 abuts from below against the.
Wheel axle 2 in such a manner that the longer arm serves as a convenient support for the feet of the occupant seated on the fabric strip which assumes the shape shown by full lines in Fig. l.- If ,the how it is fitted at the middle of the W-shaped side frames 5, as shown by dotted lines in Fig. 1, the fabric strip t assumes the shape shown by the dotted lines in Fig. 1 which is suitable for sitting upright and can be made more comfortable by attaching side-straps l t (Fig. 2) at the edges of the upper part of the fabric. strip Swhich straps can be tightened to draw this partof the fabric strip 9 into the form of a backrest identifiable by the dotted lines in Fig. 1. In this position of the seat 9 the foot-rest i3 is turned into the position shown by the dotted. lines in Fig. 1, its longer arm abutting against the rear axle tube 2.
The connection of the separate members of the framework. can be effected in any suitable manner provided the earlier mentioned requirements are observed. a g a Figure d shows a specimen connection for tubular members meeting at an oblique angle, such as the joint between the parts [2 and t. The tube 12 or its spigot i5 is fitted with a skew pin 15' the projecting end of which has two grooves I? the sides of each of which are at right angles in such manner that they fit snugly against the sides of the slot 18 in the other tube 6'. When making the connection the tube ii is first approached to the tube 6 at such an angle that the pin" [6 can freely enter the slot 18, and then the tube I2 is moved into the position shown by Fig. 4 where its end is pressed firmly against the side of the tube 6 while the grooves ll of the pin [8 are locked against o posite edges of the slot is producing a rigid connection which is easily broken by reversing the process. This method of attachment can be pressed down by hand and the tube 8 drawn off,
the rounded tip of the stud 28 again facilitating release of the connection.
The table fiap I! is suitably attached to the supporting bar 12 by a screw 2| having a loose but preferably not detachable nut after releasing which the table can be mcvedinto the position shown by the dotted lines in Figs. 1 and 3 thus affording increased space for a larger or more heavily-dressed occupant.
The foot-rest I3 is attached at each end to the longitudinal bearers 3 by pins 22 (Fig. 7) fitting into cylindrical sockets 23 in the, foot-rest l3 and pressed outward, by springs 2 The pins 22 have studs 25 working in slots of the foot-rest it. By pressure on these studs the pins 22 can be released from their sockets in the bearers 3 to enable removal of the foot-rest 13. In assembling the carriage this procedure is reversed.
The bow is carrying the front end of the fabric strip 9 is U-shaped (Fig. 6) with ends bent outward and downward to fit into corresponding holes in the side frames 5 in the positions shown by full lines (recumbent) and dotted lines (seated) in Fig. 1.
The wheels I are attached by bearing plugs (not shown) to the corresponding axle pins 26 (Figs. 8-10.) The axle pin 25 fits into the stepped end of the axle tube 2 which is provided with a collar 2?. having eyes 28 on either side through which are passed wires 29 carrying mudguards to (Fig. 8) on their outer ends. The
other ends of these wires 29, after passing Y through the eyes 28, are bent downward as shown in Fig. 9. The collar 2'] and axle pin 26 are secured to the end of the axle tube 2 by a pin3 projecting from the bearer 3 that rests on the axle tube 2. The bearer 3 is connected to the axle tube 2 by a skew bolt It} as already described in connection with Fig. 4. When assembling, the collars '21 with the wires 29 and mudguards 36 are first pushed over the ends of the axles 2 after which the wheels I are pushed on and finally the bearers 3 are attached with the springs 4 and the side frames 5. The bearers 3 are first applied obliquely to enable the bolts 15 to be pushed perpendicularly into the corresponding holes of the axle-tubes 2 and then swung aside to enable the pins -3 toengage the holes of the collar 21, the axle 2 and axle-pin 25. When all wheels are attached in this manner and both bearers 3- have been fitted in place the foot-rest i3 is attached between the ends of the bearers 3 thus locking the framework in position. It now remains to attach the backrest 6 with the seat 9 and the handlebar 8 with the extension tubes 1 whereupon the push-chair is completely assembled. The extension tubes I are not required if the childpushes the carriage itself and, e. g... uses it as a dolls perambulator. I
the mudguards 30 are not required the.
wheels I and bearers 3 can be attached to the axles 2 in the manner shown in Fig. 11. In this case the bearers 3 are only equipped with a skew bolt 15 which in the working position engages both the axle tube 2 and the extended axle pin 26 of the wheel I and thus assures a firm connection between the three components 2,3, and I -..To convert the. baby carriage into a wheeled chair (Fig. 12) the back rest 6 is fitted into the side frames 5 in. the opposite manner to that shown in Fig. 1 .andthe handlebar 8 is correspondingly fitted into the other ends of the side frames v5 after drawing off the hem pocket of the fabric seat 9 from the bow I0. I a The. resulting chair can be converted into a rocking-chair, or the original baby carriage transformed into a cradle or sleigh, by removing the wheels I and substituting bow-shaped runners or rockers 3| according to Figs. 13 and 14. Each of these runners 3| is provided with two rightangled bent tubes 32 the horizontal arms of which are pushed into the ends of the axle tubes 2 andlocked there in the same manner as the axle pins 26 of the wheels I. If it is required to convey the baby carriage by road or by rail or to pack it at home, the two U-shaped ends 6 and 8 are fittedinto each other in the reverse way as shown by Fig. 15.. The fabric seat 9 is threaded at the endfreed by with-. drawing thebow H] or at the other end, over the back-rest 6 and attached to the handlebar 8 by the leather straps M, or vice versa. The fabric seat 9 is suitably made of two layers sewn together in the form of a sack or bag. All remaining parts of the baby carriage are now placed in this bag and the open end of the latter secured by a flap 33. An expanding pocket 34 can suitably be sewn underneath this flap on the fabric seat 9 to accommodate linen, clothing, etc.
The flap 33 is preferably made to close both the open end of the bag formed by the fabric seat 9 and of this pocket 34. The cross-piece of the tubular handlebar 8 serves as a convenient handle'for carrying the folded baby carriage which forms as shown in Figs. 15 and 16 a compact, flat and convenient package. In this form the baby carriage can also be delivered by the manufacturer to the retailer Or wholesaler making full use of the available loading space.
By the addition of a few supplementary parts the push-chair described above can easily be converted into an ordinary perambulator. The framework l4 remains the same as also the tubular members 5, 1, and 8. Instead of the backrest 6 two bent tubes 35 are used carrying on their horizontal arms a body 336 closed at sides, bottom and ends. The tubular members 35 are pushed at one end into the side frames 5 while at the other end they are provided with skew bolts such as those described in connection with Fig. 4 and there denoted by Is for locking them to the tubes I suitably in the same holes as those used in assembling the push-chair for attaching the table flap l I, I2 in the position shown dotted in Fig. 1. The body 36 is preferably of some close fabric provided on its two free longitudinal edges with strap loops 3'! of reinforced material through which the tubes 35 are passed. The front ends 35' of these tubes are bowed out to enable the perambulator to be carried by them when needed.
The hood frame is formed by the original backrest 6 passed through the loops 38 of a hood covering 39. To give it the required arched shape theihood is stiffened with a wire rim 40 of vU- shape with ends bent upwards and outwards. The top of the hood 39 is provided inside with a doubling through which the wire 40 is passed stretching the top of the hood tight by means of its bowed arms. The lower edge of the top of the hood is in-turned (Fig. 20) and its free seam attached to the inner side of the hood, e. g., by press-studs forming a pocket enclosing the cross-piece of thewire 45. .Thefree ends of the wire 4-8 are fitted into corresponding holes in the tubular bow 5. The hood 39 is thus supported in front by the horizontal arms of the tubular members 35 and held in place by the arms 4| with pins 52 (Fig. 19), entering into holes in the tubular members 35. On the other end of each arm M is a pin d3 withhead 4d and thumb-nut 5. The pin. Q3 fits into holes in the bow 6. By tightening the nuts 45 the completev hood can be held in the position shown by full lines in Fig. 17. By slacking back the nuts &5 the hood can be folded down e. g. into the position shown in the figure by dotted lines and re-locked by tightening the nuts or it may be completely removed.
When the hood and the handlebar 8 are removed the sides of the perambulator formed bythe parts 3, t, 5, l and 35, can be folded inwards over each other giving the perambulator a suitably fiat shape for conveyance... The baby carriage when folded in this fashion can be easily carried by the central bows of the side members 5. The other members, via, the handlebar 8 and bow 5 with the hood 39 can be packed insidethe perambulator body 33 after removing the stiffening wire 2-9. In addition to the advantages already described the baby carriage according to the present invention has the further advantage that all fabric parts e. g. the seat 9,'the body 35, and the hood 33, can easily be removedfor cleaning or renewal.
The invention is not restricted to the examples herein described and illustrated but may be modified in many ways, particularly 'in the details such as the manner of attachment or shape of the component parts.
I claim:
1. A foldin baby carriage having a chassis comprising a pair of spaced axle tubes, vehicle supporting members removably mounted on each end of said tubes, pins removably securing said members in position on said axle tubes, a pair of spaced longitudinal chassis members removably mounted on said axle tubes, a frame work of bent tubing, said framework comprising two W-shaped tubular side frame members and two essentially similar U-shaped tubular end frame members, said end frame members being removably secured to said side frame members, springs interposed between said side frame members and respective chassis members, and a flexible fabric seat supported by said framework.
2. A folding baby carriage according to claim 1, wherein said seat comprises two layers of fabric joined together in the shape of a bag to receive the various disassembled parts of said carriage, said bag having at its open end a doubled loop to receive one of said U-shaped end members, and means to removably secured said U-shaped end members together whereby one of said U-shaped members may form a handle for said bag.
3. A foldin baby carriage according to claim 1, wherein said vehicle supporting members comprise wheels, one wheel being removably secured to each end of each of said axle members.
4. In a baby "carriage according to claim 3, a
mudguard for each wheel, and a common means for removably attaching each wheel andits'respective mudguard and respective axle end together and-to one of said chassis members.
'5. A baby carriage according to claim 1 wherein the side frame members are each provided with a pluralityof longitudinally spaced holes, a detachable cross-bar adapted to be-selectively inserted into said holes and on which one'end of said fabric seat is mounted,'adjustable straps secured to said fabric seat and adapted to'coact with one of said end members to position said seat, whereby by altering the position of said cross-bar and adjusting said side straps the fabric seat can be adapted as required for a seated or recumbent position of the occupant.
6. In a baby carriage according to claim 1, a detachable foot-rest carried by and spacing said longitudinal chassis members,.said foot-rest being adjustable to provide support for either a seated or a recumbent occupant.
7. In a baby carriage according to claim 1, connecting means for removably'connecting the ends of said U-shaped end members to opposite ends of said side frame members to form a chair, said fabric seat having loops at its opposite ends through which the cross-bars of the said U- shaped members are passed.
8. In a, baby carriage according to claim 1, wherein said vehicle supporting members comprise bow-shaped runners, and clips to retain said runners in place on said axle tubes.
9. In a baby carriage according to claim 1, a pair of additional longitudinally extending tubular members, one end of each of said additional members being removably attached to one end of a respective side frame-member and the other ends being removably attached to one of said U-shaped end members, and a flexible fabric body removably secured to said additional tubular members.
'10. In a baby carriage according to claim 9, characterized in that said fabric body is provided at its upper longitudinal edges with reinforced fabric "loops to embrace said tubular members whereby" said body may be detachably fixed to said members.
11. In a baby carriage according to claim 10,12. removable hood comprising one of the tubular U-shaped end members having openings therein, a fabric covering having loops, U-shaped wires having arms bent outwards and inserted with their free ends into the corresponding openings in said U-shaped end members and passing through the loops in said covering to maintain said covering in a predeterminedrshape.
12. In a baby'carriage according to claim 11,8. pivotal connection between one end of eachvoi said arms and said additional tubular members, and bolts detachably securing the other endof said arms to the lower portions of the U-shaped ends whereby by releasing said bolts said arms may be swung to swing the hood to difierent positions.
13. A baby carriage according to claim 1, characterized in that said tubular members are secured together by a detachable connection, said connection comprising a skew-bolt firmly held in one of said members and havinga portion extending outward therefrom, said outward extending portion having a pair of spaced annular grooves, said other tubular member having an elongated slotin its wall in which said skew bolt is inserted and swung to cause said grooves to engage the wall of said tube at opposite ends of the slot therein. v v
REFERENCES CITED The following references are of record in'the file of this patent:
UNITED STATES PATENTS Number Name Date 2,432,489 Schultheis Dec. 9, 1947 FOREIGN PATENTS Number Country Date 47,857 France "Aug. 14, 1937
US746537A 1945-12-01 1947-05-07 Folding baby carriage Expired - Lifetime US2511990A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3150736A (en) * 1962-12-03 1964-09-29 Vernon R Kaufman Knockdown golf bag cart

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR47857E (en) * 1936-12-04 1937-08-14 Folding baby carriage
US2432489A (en) * 1945-07-06 1947-12-09 Republic Steel Corp Foldable baby carriage frame

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR47857E (en) * 1936-12-04 1937-08-14 Folding baby carriage
US2432489A (en) * 1945-07-06 1947-12-09 Republic Steel Corp Foldable baby carriage frame

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3150736A (en) * 1962-12-03 1964-09-29 Vernon R Kaufman Knockdown golf bag cart

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