GB2236237A - Easy lifting spade or fork - Google Patents
Easy lifting spade or fork Download PDFInfo
- Publication number
- GB2236237A GB2236237A GB8921871A GB8921871A GB2236237A GB 2236237 A GB2236237 A GB 2236237A GB 8921871 A GB8921871 A GB 8921871A GB 8921871 A GB8921871 A GB 8921871A GB 2236237 A GB2236237 A GB 2236237A
- Authority
- GB
- United Kingdom
- Prior art keywords
- leg
- spade
- fork
- user
- load
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B1/00—Hand tools
- A01B1/02—Spades; Shovels
- A01B1/028—Spades; Shovels with ground abutment shoes or earth anchors for facilitating lifting
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Agricultural Machines (AREA)
- Soil Working Implements (AREA)
Abstract
The Self-raising Spade is designed to enable material to be moved from a low level and raised to a working height, without requiring the user to bend or stoop. The action does not require the user to take the weight of the load whilst in a bent posture, therefore reducing the risk of physical injury. The essential feature of this invention is the detachable triangular support leg upon which the load rises to a selected height, this being brought about by the natural backwards motion of the user, the leg returning automatically towards the shaft on discharge of the spade towards the side. <IMAGE>
Description
Sheet 1 Specification
Self Raising Spade
Technical Field; This invention relates to manual implements designed to minimise physical strain on the user. Where reference is made to the term "spade" it is intended that the implement head is exchangable for a fork or shovel blade, employing the same principle of operation.
Background; Spades are well known implements used in agriculture, industry and in domestic applications, their operation generally involving bending and stooping, placing a strain on the user's spine with a consequent risk of injury.
Essential Technical Features: The essential feature of this invention is a support leg, freely pivoting at opposite rear corners of the implement head and bearing on the ground at a central point, upon which the load is raised, the rotation of the head on discharging the load causing a reaction in the leg whereby the leg returns automatically towards the shaft. The action does not require the user to stoop or take the weight whilst in a bent posture.
Versatility of the spade is improved by the ability to simply detach the leg for use as a general plJrposa implemenf .
sheet 2
Drawings;
Fig 1: The spade is shown with detachable support leg pivoting freely in the sockets.
Fig 2: The triangular support leg detached from the spade. The leg is released by compression of the extreme wends of the side members.
Fig 3: The first stage of operation. The blade is driven into the ground and the shaft levered to free the earth, or material to be raised. The support leg falls to the ground.
Fig 4: The foot is removed from the blade and applies pressure to the support leg base, fixing it's position on the ground.
Fig 5: The shaft is gripped in the conventional way, the natural backwards motion of the user causing the blade to rise upon the leg to a height where the load may be moved or unloaded as required.
Sheet 3
Fig 6: The spade head with the support leg attached.
Figs 7 & 8: Side and rear elevations of the mounting sockets, Fig g: - shows the leg in it's extended (vertical) position. The outer arrows show the direction of rotation of the implement head on discharge to be side. (to the loft in this example). The inner arrows show the relative motion of the leg pivoting against the the helical face of the socket, returning it towards the shaft
Abstraot; Figures 1 to should accompany the abstract.
Claims (4)
- Sheet 4The Claims 1. A spade or fork incorporating S detachable support leg, pivoting freely at opposite corners of the implement head, and bearing on the ground at a central point. upon whIch the load is raised. the rotation of the head on discharge of the load exerting a force of reaction on the leg, returning it towards thS shaft.
- 2. A spade or fork as claimed in Claim 1.wherein the leg is detached b compression of the extrame ends of the side members.
- 3. A spade or fork as claimed in Claima 1 and 2, wherein the leg pivots freely in helioally machined sockets, providing a leg-return reaction by virtu of the gradient presented by the helical socket face against the leg o rotation to the side.
- 4. A spade or fork as claimed in claims 1, 2 & 3, wherein the sockets incorporate upper and lower limit top faces, restricting the travel of the leg and preventing contact with the shaft.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8921871A GB2236237B (en) | 1989-09-28 | 1989-09-28 | Self raising spade |
| PCT/GB1991/000518 WO1992017049A1 (en) | 1989-09-28 | 1991-04-02 | Self raising spade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8921871A GB2236237B (en) | 1989-09-28 | 1989-09-28 | Self raising spade |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8921871D0 GB8921871D0 (en) | 1989-11-15 |
| GB2236237A true GB2236237A (en) | 1991-04-03 |
| GB2236237B GB2236237B (en) | 1993-12-01 |
Family
ID=10663731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8921871A Expired - Fee Related GB2236237B (en) | 1989-09-28 | 1989-09-28 | Self raising spade |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2236237B (en) |
| WO (1) | WO1992017049A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD381778S (en) | 1995-06-22 | 1997-07-29 | Semo Scott R | Combined adjustable scoop and rake/scraper for animal feces removal |
| GB0811125D0 (en) * | 2008-06-18 | 2008-07-23 | Tyndale Biscoe Stephen | The fulcrum weeder |
| US10980162B1 (en) | 2019-12-30 | 2021-04-20 | Stephen E. Dombrowski | Lifting aid for a long-handled implement |
| US11083122B1 (en) | 2019-12-30 | 2021-08-10 | Stephen E. Dombrowski | Lifting aid system for a long-handled implement |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB547775A (en) * | 1941-07-03 | 1942-09-10 | Lionel De Merindol Malan | Improvements in and relating to implements for digging |
| GB589347A (en) * | 1944-07-19 | 1947-06-18 | Francis & Barnett Ltd | Improvements in or relating to spring hinges particularly applicable to paper clips and door closing devices |
| GB659100A (en) * | 1948-11-19 | 1951-10-17 | Luc Claude Jousse | Improvements in or relating to spades or the like |
| DE806499C (en) * | 1949-08-26 | 1951-06-14 | Heinrich Faltermayer Sen | Shovel with hinged support |
| US3119596A (en) * | 1962-02-08 | 1964-01-28 | Bancroft F Pratt | Bulk removal tools |
| GB1161667A (en) * | 1964-03-26 | 1969-08-20 | Norman Francis Furneaux | Hand Operated Digging Tool |
| US4461458A (en) * | 1982-12-09 | 1984-07-24 | Charlemagne Poulin | Low effort digging and lifting tool |
| GB2179831A (en) * | 1985-09-04 | 1987-03-18 | John Leonard Kelly | Spade or fork |
| US4881332A (en) * | 1988-05-20 | 1989-11-21 | Evertsen Gary L | Shovel lifting aid |
-
1989
- 1989-09-28 GB GB8921871A patent/GB2236237B/en not_active Expired - Fee Related
-
1991
- 1991-04-02 WO PCT/GB1991/000518 patent/WO1992017049A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| GB8921871D0 (en) | 1989-11-15 |
| WO1992017049A1 (en) | 1992-10-15 |
| GB2236237B (en) | 1993-12-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20010928 |