Leaf free-hand slicer for middle school biology teaching

A technique of freehand slicing and biology, which is applied in the field of experimental equipment, can solve the problems of inconvenient experiments and teaching, easy to scratch fingers, etc., and achieve the effect of preventing finger scratches, low risk, and improving accuracy

Inactive Publication Date: 2017-11-24
杨平
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In middle school biology teaching, in the experiment of observing plant mesophyll cells, students are required to slice the leaves by hand. The operation method of free-hand slicing is to place the leaves on the glass first, press the leaves with the index finger of the left hand, and stick the blade with the right hand Cut off a part of the index finger first, and then cut the blad

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Leaf free-hand slicer for middle school biology teaching
  • Leaf free-hand slicer for middle school biology teaching
  • Leaf free-hand slicer for middle school biology teaching

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Examples:

[0021] Such as Figure 1 to Figure 3 As shown, the present invention provides a technical solution that includes an outer sleeve 1 and a spiral dial 2. The outer sleeve 1 is provided with a fixed round table 3 at the upper end, and the fixed round table 3 has a larger diameter than the outer sleeve 1 With a diameter of 2.0cm-3.0cm, the center of the fixed round table 3 is provided with a first circular hole 4, the fixed round table 3 is provided with a round glass sheet 5, and the radius of the fixed round table 3 is greater than the radius of the round glass sheet 5 by 0.3 cm-0.5cm, the center of the circular glass sheet 5 is provided with a second circular hole 6, the first circular hole 4 and the second circular hole 6 have the same size, the fixed circular table 3 provides a place for blades to slice, the blade 8 Swipe on the circular glass sheet 5 to realize cutting of the blade. The blade moves upward in the first circular hole 4 and the second circular ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Outer diameteraaaaaaaaaa
Radiusaaaaaaaaaa
Login to view more

Abstract

The invention discloses a leaf free-hand slicer for middle school biology teaching. The leaf free-hand slicer comprises an outer sleeve and a spiral indexing plate; a fixing circular table is arranged at the upper end of the outer sleeve; a circular glass sheet is arranged on the fixing circular table; a hinge pin is arranged on one side of the fixing circular table; the upper end of the hinge pin is fixedly connected with a blade through a rotary shaft; an inner sleeve is arranged in the outer sleeve; a spring piece is arranged at the bottom of the sleeve interior of the inner sleeve, and is connected with a limiting plate; an adjusting bolt perpendicularly penetrating through the side walls of the inner sleeve and the outer sleeve is arranged on one side of the limiting plate; the lower end of the outer sleeve is arranged in the spiral indexing plate; scales are formed in the spiral indexing plate; an adjusting rod is arranged in the center of the bottom of the inner side of the spiral indexing plate; and the upper end of the adjusting rod is exactly in contact with the bottom of the inner sleeve. A leaf can be fixed and cut conveniently, slicing is carried out with high precision and the quality of an experiment and teaching is improved.

Description

technical field [0001] The invention relates to an experiment appliance, in particular to a blade freehand slicer used in middle school biology teaching. Background technique [0002] In middle school biology teaching, in the experiment of observing plant mesophyll cells, students are required to slice the leaves by hand. The operation method of free-hand slicing is to place the leaves on the glass first, press the leaves with the index finger of the left hand, and stick the blade with the right hand Cut off a part of the index finger first, and then cut the blade close to the index finger in a parallel direction to obtain thin slices. When students use the blade, it is easy to cut their fingers, which will cause inconvenience to experiments and teaching. In view of this problem, it is necessary to design a special blade slicer , which is convenient for fixing and cutting blades, and has high precision at the same time to improve the quality of experiments and teaching. Co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B26D1/147B26D7/02B26D7/08B26D5/10
CPCB26D1/147B26D5/10B26D7/02B26D7/08
Inventor 杨平
Owner 杨平
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap