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Wire-Coil Potato Masher: A Flat Spiral of Wire on Five Braces

Myron H. Monroe, Rochester, New York · Public domain (expired patent)

أنشأه

Forge

6. أكتوبر 2026

Wire-Coil Potato Masher: A Flat Spiral of Wire on Five Braces

A solid masher has nowhere for the potato to go but sideways. Myron H. Monroe of Rochester, New York, received US 73,743, dated 28 January 1868, for an article for mashing potatoes or other vegetables made of tinned or plated wire: a coil "leaving a space between the wires ... for the purpose of allowing the vegetables to pass through the coil when used," with five braces soldered to it — one at the centre and four round the outer circle — brought together into a handle. This rung works out the wire needed, then bends the coil and braces from stainless wire, prints the handle, and mashes a pan of potatoes.

متوسط

About 2 hours, plus printing

التعليمات

Wire for the coil

جارٍ تحميل دفتر Jupyter…

Wire kitchen tools before it

The embedded blueprint beats eggs with wire floats. Monroe bends one wire into a flat coil to mash through.

Read US 73,743

"I construct my vegetable-masher of tinned or plated wire, of suitable size, forming a coil, a, of sufficient size, leaving a space between the wires, as seen in drawing, at a, for the purpose of allowing the vegetables to pass through the coil when used."

Bend the coil

From 3 mm stainless wire, bend a flat spiral 3.5 turns from 16 mm across at the centre, about 9 mm between turns, leaving both ends long.

المواد لهذه الخطوة:

سلك من الفولاذ المقاوم للصدأ1 قطعة

الأدوات المطلوبة:

زرادية مستديرة الفك

كماشة مسطّحة الفكّين

ملزمة منضدة

قفّازات عمل جلدية

Bend the braces

Bend the two long ends up at right angles as two braces. Add a centre wire and two more to the outer turn, wrapping each round the coil, so five braces meet 150 mm above it.

المواد لهذه الخطوة:

سلك من الفولاذ المقاوم للصدأ1 قطعة

الأدوات المطلوبة:

كماشة مسطّحة الفكّين

منشار حديد

قفّازات عمل جلدية

نظارة أمان شفافة

Print and fit the handle

Print the handle (/uploads/blueprints/wire-coil-potato-masher-handle.stl). Print in PETG at 0.2 mm layers, 30 % infill, 4 walls; wash before first use. Twist the five ends together, file them, and epoxy them into the handle's bore.

المواد لهذه الخطوة:

خيط PETG1 قطعة

إيبوكسي ثنائي المكوّن1 قطعة

الأدوات المطلوبة:

طابعة ثلاثية الأبعاد بالخيط (FDM)

مبارد (مبرد يدوي)

The build in 3D

FreeCAD model of this build, not of the patent: the flat 3.5-turn coil of 3 mm wire, a centre brace and four outer braces meeting 150 mm up, and the printed handle.

ملف التصميمBLENDCC0 - Free

تنزيل النموذج

Cook and mash

Boil 500 g of potatoes, peeled and quartered, in salted water for about 20 minutes until a knife slides in; drain. Mash them with the coil and time it to no lumps.

المواد لهذه الخطوة:

بطاطس1 قطعة

ماء1 قطعة

الأدوات المطلوبة:

قِدر عميق الجوانب

ميزان مطبخ رقمي

ساعة إيقاف

A coil that bends, braces that loosen

Wire-coil potato masher troubleshooting.

Flow

History and honest limits

**Myron H. Monroe** of Rochester, New York, received US 73,743, dated 28 January 1868. Two of the braces are the ends of the coil bent at right angles; one is at the centre and the others are soldered at equal distances round the outer circle; their upper ends are joined by solder and set in the handle. He claimed the coil, braces and handle in combination. **Honest limits.** Wrapped stainless wire stands in for his soldered tinned wire, and a printed handle for his. Your times are the result.