---
publication_id: "OT-2026-000003392"
title: "Attachment for loading and unloading constructional material"
published_at: "2026-09-15T20:21:02.400110Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000003392"
categories:
  - "lifting-positioning-manipulation/hoists-and-cranes"
keywords:
  - "b66c1/427"
  - "b66c1/427"
  - "e04g21/16"
  - "b66c1/42"
  - "b66c1/44"
  - "b66c1/447"
---

# Attachment for loading and unloading constructional material

## Abstract

An attachment for loading and unloading a constructional material capable of substantially improving working efficiency and accomplishing labor saving. A pair of holding arm are pivotally mounted in a manner to be laterally spaced from each other on an arm mounting bracket arranged on a lower surface of a bracket mounted on an arm of a hydraulic shovel, between which a hydraulic cylinder is arranged, resulting in a constructional material being supported between or on the holding arms. Thus, force required for supporting the constructional material can be finely controlled as desired to prevent the material from being broken or damaged due to the application of excessive force thereto.

## 1. Drawings

[0001] Sheet 1.

[0002] Sheet 2.

[0003] Sheet 3.

[0004] Sheet 4.

[0005] Sheet 5.

[0006] Sheet 6.

[0007] Sheet 7.