RU199181U1 - Manual self-cleaning forks - Google Patents

Abstract

The utility model relates to agriculture, in particular to hand tools with teeth, and can be used for a wide range of agricultural work. Manual self-cleaning forks consist of a shank having at one end a frame with a plurality of elongated spaced teeth, a cleaning plate that is formed with a plurality of spaced holes in which the teeth are located, a spring, and a movable handle. The cleaning plate is fixed on a movable handle having lateral longitudinal grooves, while the spring is located over the handle inside the movable handle. EFFECT: increased maintainability, reduced material costs, improved usability, use of standard materials, and the possibility of upgrading existing inventory. 6 ill.

Description

The utility model relates to agriculture, in particular to hand tools with teeth, and can be used for a wide range of agricultural work.

Known self-cleaning rake [Patent for invention US5713193 dated 08.22.1996 "Self-cleaning rake" Guinn Allen Y and Stapley Linda D (US)], consisting of a handle, a handle, a spring button and two sets of teeth. The handle is made of fiberglass and consists of two telescopic parts. One of the parts is larger in diameter, and the other part is held slidingly within it. The smaller part of the handle is provided with a cleaning rod to which one set of teeth is attached, and the cleaning rod has a plurality of aligned holes through which the second set of teeth extends. The second set of teeth is attached to the first portion of the handle, and the reciprocating movement of the portions of the handle relative to each other causes the cleaning rod and its attached teeth to move, which removes debris from both sets of teeth.

The disadvantage of the device is that the presence of two sets of teeth leads to the removal of only large debris, the possibility of complete self-cleaning is not provided. In addition, the presence of the second set of teeth significantly makes the device heavier and reduces the useful area of the teeth.

Known device [Patent for invention US3884023 (A) from 20.05.1975 "Self-cleaning rake" Robinson Melvin P (US)], having teeth with downward or dependent front ends, equipped with a cleaning element, sliding on the teeth. The wiper surrounds the teeth and is pivotally connected to a bracket, which in turn is attached to a rod that is moved along the broom handle by a hand actuator. The cleaning element is movable along the downwardly pointed or dependent front ends of the teeth due to the articulated connection with the bracket. The wiper also compresses the teeth as it travels down the teeth.

The disadvantage of the device is the lack of a return mechanism. In addition, cleaning the teeth involves compressing them, which, if heavily soiled, can lead to deformation of the teeth. A bracket over the teeth reduces the ability to use the device in confined spaces.

Known self-cleaning rake [Patent for invention US4776158 (A) from 11.10.1988 "Self-cleaning rake for leaves" Baum Wendell E (US)], including an elongated handle and fixed at one end of the frame with spaced teeth. A plate is located on the teeth of the device, which is moved by a pusher fixed to the handle along the entire length of the teeth. The spring clip holds the plate in the raised position and can be released by means of a guide on the handle interacting with the pusher.

The disadvantage of the device is the presence of a protruding pusher on the handle, as well as the absence of a return mechanism. To return the plate to its original state, the user must pause the process of using the device, must change the pose and position of the hands. The cleaning plate is moved by a pusher attached to the handle. The length of the handle, the absence of additional fasteners and devices for stabilizing the position of the cleaning plate, if the teeth are heavily clogged, can lead to damage to the device.

The closest to the claimed device are self-cleaning rakes [Patent for invention US2015257335 dated 11/21/2014 "Self-cleaning rake" Riggs Christina and Riggs Donald (US)], including a hollow handle, having at one end a frame with a lot of elongated teeth located close to each other. A rod is located inside the handle, at one end of which a cleaning plate is fixed, slidingly mounted on the teeth. On the outside of the handle there is a handle, which is functionally connected to the stem. The handle allows you to move the cleaning pad along the teeth. The rod is spring loaded to automatically return the wiper blade to the frame.

The disadvantage of the device is its low maintainability due to the location of the spring inside the hollow handle. Also, the use of a hollow shank complicates the design and limits the list of materials for its manufacture. In addition, the location of the spring in the upper part of the handle increases material costs and reduces ease of use due to the disturbance of the balance of the instrument familiar to the user. In addition, the known device cannot be created by upgrading the user's existing inventory. In addition, to clean the teeth, the user must pause the process of using the device, change the posture and position of the hands.

The technical problem solved by the claimed utility model is to improve maintainability, reduce material costs, increase ease of use, use standard materials, and provide the possibility of upgrading the existing inventory.

The technical problem is achieved by the fact that manual self-cleaning forks consist of a handle having at one end a frame with a plurality of elongated spaced teeth, a cleaning plate that is formed with a plurality of spaced holes in which the teeth are located, a spring, a movable handle, and the cleaning plate is fixed on a movable handle having lateral longitudinal grooves, while the spring is located over the handle inside the movable handle.

The technical essence of the proposed device is illustrated by the following figures:

fig. 1 - manual self-cleaning forks (initial position) in plan;

fig. 2 - side view of manual self-cleaning forks (initial position);

fig. 3 - cross section of manual self-cleaning forks;

fig. 4 - manual self-cleaning forks (working position) in plan;

fig. 5 - side view of manual self-cleaning forks (working position);

fig. 6 is a sketch of a movable handle of self-cleaning forks from the side of the teeth.

In principle, the design of manual self-cleaning forks consists of a handle 1 having at one end a frame 2 with a plurality of elongated spaced teeth 3, as well as a cleaning plate 4, which is fixed on a movable handle 5, and a spring 6 located on top of the handle 1 inside a movable handle 5. The movable handle 5 has lateral longitudinal grooves 7.

The movable handle 5 provides movement of the cleaning plate 4 relative to the handle 1, and, consequently, compression and expansion of the spring 6. The overall dimensions of the proposed device are taken in accordance with existing standards for such designs.

The principle of operation of the proposed device: during the operation of the forks, the cleaning plate 4 is pressed against the frame 2 under the action of the spring 6. The cleaning of the teeth 3 is carried out by the cleaning plate 4, which is moved along the teeth 3. For this, the user removes the movable handle 4, overcoming the resistance of the spring 6. In this case, the frame 2 passes in the longitudinal grooves 7 and serves as one guide for the movable handle 5, and the handle 1 serves as the second guide. The forks return to their original state by unclamping the spring 6 after the user releases the movable handle 5.

The technical result of the claimed utility model is to improve the performance of self-cleaning forks, reduce the time and effort required to clean the teeth.

Claims (1)

Manual self-cleaning forks, consisting of a handle having at one end a frame with a plurality of elongated spaced teeth, a cleaning plate that is formed with a plurality of spaced openings in which the teeth are located, a spring, a movable handle, characterized in that the cleaning plate is fixed on a movable handle, having lateral longitudinal grooves, while the spring is located over the handle inside the movable handle.

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