US2427205A - Folding push car or wheeled chair - Google Patents

Folding push car or wheeled chair Download PDF

Info

Publication number
US2427205A
US2427205A US652961A US65296146A US2427205A US 2427205 A US2427205 A US 2427205A US 652961 A US652961 A US 652961A US 65296146 A US65296146 A US 65296146A US 2427205 A US2427205 A US 2427205A
Authority
US
United States
Prior art keywords
members
folding
pushcar
wheels
chair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US652961A
Inventor
Ford Reginald Clarence
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US2427205A publication Critical patent/US2427205A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • B62B7/10—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable by folding down the body to the wheel carriage or by retracting projecting parts into the box-shaped body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
    • A61G5/085—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding up and down, e.g. reducing or expanding the overall height of the wheelchair

Definitions

  • This invention relates to certain improve-v merits in pushcars or wheeled chairs of the kind described in the specification of my prion U. S. Patent No. 2,415,629, that i to say, of the kind comprising a collapsible structure adapted when extended to support a seat and back-rest, and resilient means hinged to said structure about a fore and aft axis: and extending along each side thereof to carry a wheel at each end.
  • An object of thepresent invention is toprovide improved means for lockingthe collapsible structure in its extended state.
  • Another object, of the inyention is to provide 5.Glaims. (Cl. 280-39) increased lateral support forthe wheels in their position of use.
  • a further object ofthe invention is to provide improved-means for locking the twoparts of' the folding handle in the extended state
  • the locking means employed, according to the present invention is arranged at each side of the collapsible structure and consists of a bar one end of which is pivoted about'a horizontaltransverse axis at or near the middle of the bottom horizontal member of said structure. The other end of this bar extends forward and carries one end of the foot rest.
  • each locking bar occupies a forwardly and downwardly inclined position, its forward part overlapping the extension of the front member aforesaid thereby supporting the hanger at the outside.
  • the bottom edge of said bar may be notched to engage pegs on the hinge plate and on said extension.
  • Lateral support for the hangers of the rear wheels when in use is provided at the outside by extending the lower ends of the rear members of the collapsible structure, and at the inside by means of a transverse bar the end portions of which are secured to the said rear members and formed so that when the chair is in its exended state they overlap and support the said hangers on the inside.
  • Figure 1 is a side View of the improved pushcar or wheeled chair.
  • Figure 2 is a rear view thereof.
  • Figure 3 is a side view of the pushcar partially folded.
  • Figure 4 1s an underside view of Figure ,1.
  • Figure 5 is an undersideview of; Figure 3;.
  • Figures 6 and 7 are detail views on. an; enlarged scale of themeans whereby the wheel; mountings are hinged. to the main frame.
  • Figures 8 and 9 are detail views on, an, enlarged scale ofthe means of; lateral support, provided for the-front and rear wheelsrespective-ly.
  • Figure 1021 s a detail view on; a. further enlarged scale of the means. of locking the foldedhandle in: the extended position.
  • the pushcar or wheeled chair comprises a-,-pair of collapsible frames spaced apartzin parallel planes constituting a collapsible superstructure each frame being of parallelogrammic construction comprising upper and lower horizontal members a, b pivotally connected at their ends with front and rear members 0, d1 respectively.
  • the members a may be, formed as arm rests and the members b maypbe. united lay-integral. stays. inthe form of a single pressing.
  • the back a of the chair is. carried by the: rear members d by means of a horizontal bar e and is pivoted at its lower end to the seat 1 which, in turn is pivoted to the front members 0.
  • the improved locking means for locking the frames aforesaid in the extended position and hence the pushcar itself comprises bars g freely pivoted on the horizontal members b at one end and carrying at the other end the footrest or step board it in a pivoted manner.
  • the bars or struts g are provided with one or more notches which to lock the pushcar in the extended position are engaged with pins or studs 0 fixed to extensions 0 of the front members 0.
  • the provision of one or more notches enables the pushcar to be locked and used at different angles, i. e. a choice of angle of the chair back to the seat 1 is given.
  • Each pair of wheels is pivotally mounted about a fore and aft axis, the wheels I of each pair being carried by brackets or hangers m from the ends of blade spring 11 extending in a fore and aft direction and having a hinged connection with the adjacent horizontal member I) of the frame.
  • a member 0, attached to the top of the blade spring 14 has journalled in it a pin b about which is pivoted a hinge plate q attached to the frame I) or integral therewith.
  • the manner of hinging is such that the wheels can be folded underneath the chair.
  • lateral support is given to front wheel hangers from the inside by the step board It and from the outside by means of the extensions of the front members 0.
  • the rear members d may be formed in one piece to provide the lower horizontal member d and formed to provide inside support for the rear wheel hangers in conjunction with outside support members d attached to the members d, as shown in Figure 2 and in enlarged detail in Figure 9.
  • the folding handle has for its lower members the members d at the upper ends of which are pivoted the upper member T which carry the ham dlebar s. At or near the pivoted ends of the members d and r are attached horizontal bars d and T The lower bar d has pivoted at the back and near each end catches t, t, which by engaging the back of the upper bar 1' lock the handle in the extended position, see Figure 10.
  • the wheels when folded may normally tend to slightly overlap but by pushing them apart against the action of the blade spring they may be caused to be locked in position by the tyres or rims making firm contact with one another due to the action of the blade springs, as shown in Figure 5.
  • a folding pushcar having a collapsible superstructure and inwardly folding wheels mounted on resilient means, said car incorporating struts adapted to secure the superstructure in its open position, and a footrest mounted on said struts and adapted to come between and secure the wheels in their open condition.
  • a folding pushcar having a collapsible superstructure and inwardly folding wheels mounted on blade springs, said car incorporating struts pivoted to a horizontal member of the superstructure and slotted to engage studs on a downward member, and a footrest mounted on said struts and adapted to come between and secure the wheels in their open condition.
  • a folding pushcar having a collapsible superstructure and inwardly folding wheels mounted on blade springs, said car incorporating struts pivoted to a horizontal member of the superstructure and slotted to engage studs on a downward member, a footrest mounted on said struts and adapted to come between and secure the wheels in their open condition, and an extension of a downward member of the superstructure adapted to laterally support the wheel carrying frame.
  • a folding pushcar as claimed in claim 2 having a folding handle which has pivotal catch members cooperating with horizontal bars for the purpose set forth.

Description

Sept. 9, 1947. R. c. FORD FOLDING PUSHGAR OR WHEELED CHAIR 2 Sheets-Sheet 1 Filed larch 8, 1946 Sept. 9, 1947. 0. FORD V FOLDIhG PUSHCAR OR WHEELED CHAIR Filed March 8, 1945 2 Sheets-Sheet 2 Patented Sept. 9, l947 UNITED STATES PATENT OFFICE;
FQLDINGJPUSH'CAR ORWHTEELED' 01mm Reginald. Clarence-Ford, Aliesley, near Goventry,
- England;
ApplicatiomMarch 8, 1946, Serial No.,652',961,
'In Great Britain July 3, 1945 This invention relates to certain improve-v merits in pushcars or wheeled chairs of the kind described in the specification of my prion U. S. Patent No. 2,415,629, that i to say, of the kind comprising a collapsible structure adapted when extended to support a seat and back-rest, and resilient means hinged to said structure about a fore and aft axis: and extending along each side thereof to carry a wheel at each end.
An object of thepresent invention is toprovide improved means for lockingthe collapsible structure in its extended state.
Another object, of the inyention is to provide 5.Glaims. (Cl. 280-39) increased lateral support forthe wheels in their position of use.
A further object ofthe invention is to provide improved-means for locking the twoparts of' the folding handle in the extended state,
The locking means; employed, according to the present invention is arranged at each side of the collapsible structure and consists of a bar one end of which is pivoted about'a horizontaltransverse axis at or near the middle of the bottom horizontal member of said structure. The other end of this bar extends forward and carries one end of the foot rest.
The lower end of the front member at each side of the structure is extended so that when the structure is unfolded, the extension of said front member overlaps the bracket or hanger for the front wheel. In its operative position each locking bar occupies a forwardly and downwardly inclined position, its forward part overlapping the extension of the front member aforesaid thereby supporting the hanger at the outside. The bottom edge of said bar may be notched to engage pegs on the hinge plate and on said extension. The said front wheel hangers are supported laterally on the inside by the ends of the foot rest when the chair is extended.
Lateral support for the hangers of the rear wheels when in use is provided at the outside by extending the lower ends of the rear members of the collapsible structure, and at the inside by means of a transverse bar the end portions of which are secured to the said rear members and formed so that when the chair is in its exended state they overlap and support the said hangers on the inside.
In the accompanying drawings,
Figure 1 is a side View of the improved pushcar or wheeled chair.
Figure 2 is a rear view thereof.
Figure 3 is a side view of the pushcar partially folded.
Figure 4 1s an underside view of Figure ,1.
Figure 5 is an undersideview of; Figure 3;.
Figures 6 and 7 are detail views on. an; enlarged scale of themeans whereby the wheel; mountings are hinged. to the main frame.
Figures 8 and 9: are detail views on, an, enlarged scale ofthe means of; lateral support, provided for the-front and rear wheelsrespective-ly.
Figure 1021s a detail view on; a. further enlarged scale of the means. of locking the foldedhandle in: the extended position.
Referringto Figuresl and 2:it;wi-1l be seen. that. the pushcar or wheeled chaircomprises a-,-pair of collapsible frames spaced apartzin parallel planes constituting a collapsible superstructure each frame being of parallelogrammic construction comprising upper and lower horizontal members a, b pivotally connected at their ends with front and rear members 0, d1 respectively.
For this purpose the members a may be, formed as arm rests and the members b maypbe. united lay-integral. stays. inthe form of a single pressing.
The back a of the chair is. carried by the: rear members d by means of a horizontal bar e and is pivoted at its lower end to the seat 1 which, in turn is pivoted to the front members 0.
The improved locking means for locking the frames aforesaid in the extended position and hence the pushcar itself, comprises bars g freely pivoted on the horizontal members b at one end and carrying at the other end the footrest or step board it in a pivoted manner. The bars or struts g are provided with one or more notches which to lock the pushcar in the extended position are engaged with pins or studs 0 fixed to extensions 0 of the front members 0.
The provision of one or more notches enables the pushcar to be locked and used at different angles, i. e. a choice of angle of the chair back to the seat 1 is given.
Each pair of wheels is pivotally mounted about a fore and aft axis, the wheels I of each pair being carried by brackets or hangers m from the ends of blade spring 11 extending in a fore and aft direction and having a hinged connection with the adjacent horizontal member I) of the frame.
For this purpose, as shown in Figures 6 and 7, a member 0, attached to the top of the blade spring 14, has journalled in it a pin b about which is pivoted a hinge plate q attached to the frame I) or integral therewith.
The manner of hinging is such that the wheels can be folded underneath the chair.
As shown in Figure 8, lateral support is given to front wheel hangers from the inside by the step board It and from the outside by means of the extensions of the front members 0.
The rear members d may be formed in one piece to provide the lower horizontal member d and formed to provide inside support for the rear wheel hangers in conjunction with outside support members d attached to the members d, as shown in Figure 2 and in enlarged detail in Figure 9.
The folding handle has for its lower members the members d at the upper ends of which are pivoted the upper member T which carry the ham dlebar s. At or near the pivoted ends of the members d and r are attached horizontal bars d and T The lower bar d has pivoted at the back and near each end catches t, t, which by engaging the back of the upper bar 1' lock the handle in the extended position, see Figure 10.
To fold the handle the catches t, t are turned in a downward direction to the position t t whereupon the handle can be folded back about the two pivoted joints.
To continue folding the pushcar the step-board h is lifted to lift the locking bars 9 clear of the pins 0 as shown in Figure 3, whence the chair can be collapsed in a forward direction. At the same time the extensions 0 and rear lateral support means provided by the bar d and members d are raised clear of the wheel hangers. By turning the step-board about its pivotal connection with the ends of the bars 9 the wheels are freed of all lateral support and can be folded underneath the chair.
The wheels when folded may normally tend to slightly overlap but by pushing them apart against the action of the blade spring they may be caused to be locked in position by the tyres or rims making firm contact with one another due to the action of the blade springs, as shown in Figure 5.
I claim:
1. A folding pushcar having a collapsible superstructure and inwardly folding wheels mounted on resilient means, said car incorporating struts adapted to secure the superstructure in its open position, and a footrest mounted on said struts and adapted to come between and secure the wheels in their open condition.
2. A folding pushcar having a collapsible superstructure and inwardly folding wheels mounted on blade springs, said car incorporating struts pivoted to a horizontal member of the superstructure and slotted to engage studs on a downward member, and a footrest mounted on said struts and adapted to come between and secure the wheels in their open condition.
3. A folding pushcar having a collapsible superstructure and inwardly folding wheels mounted on blade springs, said car incorporating struts pivoted to a horizontal member of the superstructure and slotted to engage studs on a downward member, a footrest mounted on said struts and adapted to come between and secure the wheels in their open condition, and an extension of a downward member of the superstructure adapted to laterally support the wheel carrying frame.
4. A folding pushcar as claimed in claim 2 wherein the inwardly folding wheels frictionally contact each other in the folded position by virtue of the supporting blade springs.
5. A folding pushcar as claimed in claim 2 having a folding handle which has pivotal catch members cooperating with horizontal bars for the purpose set forth.
REGINALD CLARENCE FORD.
REFERENCES CITED The following references are of record in the file of this patent:-
UNITED STATES PATENTS Number Name Date 1,109,848 Layton et a1. Sept. 8, 1914 2,415,629 Ford Feb. 11, 1947
US652961A 1945-07-03 1946-03-08 Folding push car or wheeled chair Expired - Lifetime US2427205A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2427205X 1945-07-03

Publications (1)

Publication Number Publication Date
US2427205A true US2427205A (en) 1947-09-09

Family

ID=10906626

Family Applications (1)

Application Number Title Priority Date Filing Date
US652961A Expired - Lifetime US2427205A (en) 1945-07-03 1946-03-08 Folding push car or wheeled chair

Country Status (1)

Country Link
US (1) US2427205A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473350A (en) * 1946-05-28 1949-06-14 Spackman Bernard Claren Walter Folding push chair
FR2307697A1 (en) * 1975-04-15 1976-11-12 Metabio Folding invalid chair with hand propulsion - has rigid seat under which side sections fold on lengthwise axes
FR2594327A1 (en) * 1986-02-14 1987-08-21 Tunturipyoerae Oy Wheelchair
US9636557B1 (en) * 2016-05-25 2017-05-02 Roy W. Frank Retractable golf bag wheel assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1109848A (en) * 1912-06-10 1914-09-08 Garrett Go Cart & Carriage Company Child's folding carriage.
US2415629A (en) * 1944-12-13 1947-02-11 Ford Reginald Clarence Folding push car or wheeled chair

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1109848A (en) * 1912-06-10 1914-09-08 Garrett Go Cart & Carriage Company Child's folding carriage.
US2415629A (en) * 1944-12-13 1947-02-11 Ford Reginald Clarence Folding push car or wheeled chair

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473350A (en) * 1946-05-28 1949-06-14 Spackman Bernard Claren Walter Folding push chair
FR2307697A1 (en) * 1975-04-15 1976-11-12 Metabio Folding invalid chair with hand propulsion - has rigid seat under which side sections fold on lengthwise axes
FR2594327A1 (en) * 1986-02-14 1987-08-21 Tunturipyoerae Oy Wheelchair
US9636557B1 (en) * 2016-05-25 2017-05-02 Roy W. Frank Retractable golf bag wheel assembly

Similar Documents

Publication Publication Date Title
US2436294A (en) Infant's convertible bed and seat
US2851086A (en) Lock for folding chairs
US2798730A (en) Adjustable baby stroller
US2427205A (en) Folding push car or wheeled chair
US1989865A (en) Folding chair
US2438829A (en) Wheeled carriage
US2699817A (en) Folding high chair
US2664943A (en) Chair and tablet arm assembly
US2155522A (en) Folding armchair
US3071409A (en) Folding chair
US2798733A (en) Collapsible walker-stroller for children
US1923517A (en) Folding chair
US2252224A (en) Baby swing
US834383A (en) Child's folding chair.
US2415629A (en) Folding push car or wheeled chair
US2625207A (en) Folding wheel chair
US2509036A (en) Folding infant's chair
US2837345A (en) Folding seats for telescoping carts
US3411799A (en) Push vehicles for infants and children
US3086813A (en) Folding chair construction
US1233263A (en) Toilet-seat attachment.
US3058773A (en) Folding chair with arms
US1940679A (en) Article of furniture
US2821241A (en) Chair attachments for tables
US2814333A (en) Child's chair for use either within or outside of an automobile